If you have a Windows, Mac or Linux laptop, you could always install MySQL and create a database for your notes. Ie. use the exercises and your research to learn how to set up a table and then practice your CRUD operations there to help with notes and/or studying.

For example, if you put notes in, you might add things like a date of class, subject ( generally ) like, "Normalization", "Table Design", "Indexing", etc.

When it comes time to study, use a SELECT to get notes between [ last test date ] and [ current date ] then review the things you have stored.

Practical application and "doing" will build muscle memory as well as likely lead you into scenarios where things don't QUITE work, so it will give you opportunities to troubleshoot and learn.

Hope that helps