First of all, it will be necessary to understand what is SAP IDES and how to access it, and then we'll see the main ways to access a SAP IDES system to practice SAP MM at home and get a certification in SAP Material Master or simply skill up.
The SAP IDES system is basically an SAP sandbox with some scrambled data set that allows you to play around the SAP ECC program at home without messing up any data from any company, all the data present is sample data and is only losely based on real data system.
It is even possible to install SAP IDES on your own Windows Server or Linux server, but this will mostly be achieved by companies or IT professionals.
If you are a consultant, an key user, an end user, or an SAP student, you might better want to get an IDES SAP access online and install SAP GUI on your computer or a laptop to access it and play with the system.
However, while the data is fake, it is fully usable and allow you to practice SAP MM at home for all kind of things:
Basically, all the SAP MM components are included in the SAP IDES system and all kind of objects can be created, modified, viewed and archived.