To create a professional online store, you need to define what you will sell, prepare your catalogue, choose a platform and configure payments, shipping and legal information before accepting orders. The final step is to check the complete buying journey: from finding a product to receiving confirmation and handling a return.
Installing a template and uploading products does not, on its own, resolve how the business will operate. This guide explains how to create an online store step by step and which decisions to make before starting, whether you are starting from scratch or already selling through other channels.
1. Define what you will sell and to whom
Start with a specific proposition: which products you will offer, who needs them and why they would buy them from your store. Also decide whether you will sell to individuals, businesses or both. That choice affects the prices you display, invoicing and the terms of sale.
- Initial catalogue: select products you can reliably describe, deliver and restock.
- Availability: distinguish your own stock, made-to-order production and supply from third parties.
- Destinations: specify where you can ship and which restrictions affect your products.
- Customer service: define who will answer enquiries and resolve issues.
Review the viability of each order, including the product, packaging, payment collection, transport and possible returns. Do not set free shipping or a promotion without first checking its effect on your margin.
2. Prepare a catalogue that helps customers decide
A product page should answer the questions that arise before buying: what it is, what it includes, how it is used and which option to choose. Use original descriptions and photographs that show the actual product and that you have the right to publish.
What every product page should include
- A clear name and a category the buyer understands.
- A description of relevant features, materials, dimensions and uses.
- Sharp photographs with useful details and descriptive alternative text.
- The price and information about applicable taxes and additional charges.
- Variants, such as size or colour, with correct availability and prices.
- Delivery information and access to return conditions.
- Warnings, instructions and safety information required for that product.
Assign an internal reference to every product or variant and decide which system will be the source of inventory information. If you also sell in a physical shop, check how stock is synchronised so you do not accept orders you cannot fulfil.
Organise categories according to how customers search, not how you store your goods. Filters should help compare real options: a size, a measurement or a material, for example. Avoid creating empty categories just to fill out the menu.
3. Choose the platform around your business operations
The platform should fit your catalogue, payment methods, carriers and the tools you already use. Consider who will update products, which integrations you need and how you will export your data if you switch solutions.
WooCommerce lets you build a store on WordPress and requires you to manage hosting, updates and extension compatibility. Shopify provides a hosted platform, although you still need to review applications, integrations and the conditions of each service. Neither option removes the need to maintain the catalogue and handle orders.
For a more detailed comparison of both alternatives, see our guide to WordPress or Shopify: which to choose for your online store.
Before hiring a provider, ask them to separate setup costs from recurring costs: domain, hosting or platform, extensions, maintenance and third-party services. Also check who will own the domain and administration accounts.
4. Configure secure payments and check their statuses
Choose payment methods based on your buyers and the provider's availability for your business. Review fees, settlement times and the procedure for refunds or disputes, without assuming all payment gateways work the same way.
- Card: use a payment provider's official integration and check additional authentication where applicable.
- Other methods: verify their actual compatibility with the platform, country and merchant account.
- Bank transfer: if you offer it, establish when stock is reserved and when payment is considered confirmed.
Your website must use HTTPS. Avoid collecting card details through your own forms: use the provider's secure flow. Enable two-step authentication for administrative accounts where available and limit each person's permissions.
Test an accepted payment, a declined payment and an abandoned payment. Check that the order status matches the payment result and that a repeated attempt does not create duplicate orders or charges. Also test a refund using the provider's supported procedure.
5. Define shipping, deliveries and returns before selling
Configure shipping zones, rates and delivery times based on the actual conditions of your logistics. Weight, dimensions, destination and product type can change the cost. Distinguish preparation time from transit time and do not promise a delivery you cannot reliably provide.
- Check rates using products and addresses representative of each zone.
- Block destinations you do not serve and explain restrictions before payment.
- Review what happens when an order combines products with different availability.
- Define how tracking information is provided and how losses or damage are handled.
- Explain the returns process, its conditions and any legally applicable costs.
If you offer collection, make sure there is a real collection point and its conditions are clear. For international sales, also review taxes, customs and obligations applicable to the destination. Your returns policy cannot replace or restrict consumers' legal rights.
6. Review your store's legal and tax requirements
Requirements depend on where the business is established, whom it sells to and which products it offers. For a store selling to consumers in Spain, review seller information, purchase conditions, data protection, cookies and consumer rights. Before opening, confirm your activity's tax and invoicing obligations with appropriate professional advice.
- Seller identification: publish the legally required details of the seller and their contact channels.
- Pre-purchase information: product characteristics, total price, charges, payment methods and delivery conditions.
- Terms of sale: explain the process, returns, the right of withdrawal where applicable and applicable statutory guarantees.
- Data protection: explain how you process data and collect only what is necessary for each purpose.
- Cookies and commercial communications: review when consent is needed and do not confuse order messages with a marketing subscription.
- Product requirements and accessibility: check the rules applicable to your catalogue and e-commerce service.
Do not copy another store's legal texts: they may describe a business, data processing activities or conditions that are not yours. Personalised, digital, perishable or specifically regulated products may require different treatment.
For official references, you can consult Spain's Law on Information Society Services, the consolidated text of the General Law for the Protection of Consumers and Users and guidance from the Spanish Data Protection Agency. This guide does not replace a legal review of your situation.
7. Make buying straightforward on mobile
Review the store on a real phone: buyers should be able to find a product, choose a variant and see the total without zooming in or searching for hidden information. Forms need clear labels and error messages that explain how to correct the problem.
Optimise image sizes and avoid adding applications that do not provide a necessary function. Check keyboard navigation, contrast and whether buttons are easy to identify. Speed helps people use the store, but it does not guarantee sales or Google rankings.
Prepare original titles and descriptions for categories and products, understandable URLs and useful internal links. Confirm that public pages can be crawled and private customer and order pages are not exposed to search engines. Also define how you will manage out-of-stock products without hastily deleting their URLs.
8. Pre-launch checklist
Do not consider the store finished just because it looks good. Complete a full test purchase and verify the order from the perspectives of both the customer and the person preparing it.
- Product pages show correct images, prices, variants and stock.
- The basket retains products and correctly calculates taxes, discounts and shipping.
- An unserved destination does not allow an order to be completed by mistake.
- Accepted, declined and cancelled payments generate the expected statuses.
- The order appears in store management and deducts inventory according to the intended configuration.
- Confirmations arrive with correct details and instructions, without test links.
- Preparation, tracking, cancellation and refunds have been rehearsed.
- Legal texts and contact details correspond to the actual seller.
- Cookies requiring consent do not activate before it is obtained.
- Purchasing works on mobile and with keyboard navigation.
- No demonstration passwords, sample content or accidental indexing blocks remain.
- There is a recovery procedure and someone responsible for handling issues.
Use the provider's test environment first where one exists. Before accepting public purchases, also confirm that production credentials and payment methods are active. If you perform a real verification transaction, do so in a controlled way and review any potential costs.
9. Organise the work after opening
Creating the store is the beginning. Assign responsibility for updating the catalogue, reviewing payments, preparing shipments and answering enquiries. Maintain integrations and security, and periodically check the buying process after any relevant change.
Decide how you will attract visitors through content, search engines, advertising or your existing channels, and how you will measure orders and issues while respecting applicable consent requirements. Do not invest in attracting traffic before checking that the store can take payments and deliver correctly.
Where to start with your online store
Start by preparing your catalogue, shipping destinations, payment methods and the tools you need to connect. With that information you can compare proposals by their actual scope, not just the appearance of the homepage.
If you need help turning those decisions into a store, you can explore our online store design service or tell us about your project. At Creativos Digitales ESP you speak directly with the person doing the work, and we respond to enquiries and quote requests within a maximum of 48 hours.