Don't know SAP software yet? If you have a cloud provider account (Amazon Web Services, Microsoft Azure or Google Cloud Platform) you can easily try the following SAP solutions for free:

• Educational solutions: These solutions are used for educational purposes and they have a free period depending on the course you have chosen.
• Developer editions: These solutions could be used as long as you comply with the terms and conditions of the Developer Agreement.
• Solutions with a free trial period: These solutions could be used as trials for the configured free period and afterwards if you want to continue using the instances created from these solutions, you have to unlock the subscription period for them.

Go to this link in SAP Cloud Appliance Library and note that you do not have to pay SAP for using these Trial or Developer Editions. However, the cloud provider will charge you for infrastructure costs.

If you want, you could check out the additional offerings in this link.