ok the best place to start to learn the basics again
is www.dbheaven.com
then after that and u have a scope of the language and how the syntax goes, learn all the commands u want to explore in groups over a series of weeks.
Like in one night you could look at all the sound commands
build a mini script to remember what they do and the nuiances they have
then even maybe build a small music program.
Thats getting a bit far ahead of knowing the basics but there just as important to practice.
Eventually u will have a better insight on how to do something in DB.
Its good to have that experience previously as nowadays u can add a lot more but still trying to manage the sizes of things without too much overhead.
You will eventually fall back into the coding mind if u were ok at it before and theres enough maths help support here and media support,u should be fine if u start small then build up.
im ramblin