Hi M.Lezon,
Thank you for reaching out to us on the Microsoft Q&A forum.
There are ways to access Microsoft Dynamics 365 (D365) for study purposes. A few of them are through free trials offered by Microsoft of its various Dynamics 365 applications, by using the below link: https://www.microsoft.com/en-in/dynamics-365/
Dynamics 365 Sales
Dynamics 365 Customer Service
Dynamics 365 Finance
Dynamics 365 Business Central And many more.
These trials usually last for 30 days, what you said in the above is exactly correct we can access only for 30 days. if we want to learn D365 BC more yes, we need to buy the license.
If you are still facing any issue, please let us know in the comments. We are glad to help you.
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