I recently got mimas for my ti-84+ silver and i'm new to assembly. with it i found alot of libraries and added them as well thinking that they would be useful, however i don't know what any of them do and don't even know any of the syntax used for them. there was vary little documentation about them except for how to add them to a program.
This is kind of a late reply because I forgot about this thread…
Anyway, controls for Mimas can be found here. The syntax follows normal z80 assembly syntax as it is used on a computer. Some tutorials for z80 assembly can be found here. As for libraries, after including them, they are practically long bits of code that contain useful functions, values, and other things. For example Ion I think has sprite routines that you can use. To actually use them you need to know the names of the functions, which requires looking at the documentation for each library.
Fire Emblem for TI 83/4+ Progress: Demo: 75% Total: 40% Postponed indefinitely