Mateusz Łuniewski Greetings!
I understand that you are interested in utilizing Azure's OpenAI service for your learning.
Please note that, Azure OpenAI requires registration and is currently only available to approved enterprise customers and partners. Customers who wish to use Azure OpenAI are required to submit a registration form.
I would suggest you, test by get an Azure account for free and you'll get some free Azure credits to get started. Then you need to fill and submit this form and wait for the access approval confirmation email. Then create the Open AI resource.
Your subscription should use be a pay as you go account to ensure Azure OpenAI deployments are successful once your request is approved.
Also, check Azure account requirements to get started to ensure Azure OpenAI deployments are successful once your request is approved.
I hope this helps. Do let me know if you have any further queries.