I found this on the TI site and was interested in the fact someone could actually make an emulator for a calculator

The only problem is I have no clue what the hell to do

A Guide (Comprehensive please ) would be GREATLY appreciated.
I'm asking this because the readme doesn't seem to help much since it really doesn't include much detail on what to do.

Theres a few things I'd like to ask if someone actually makes one
File types (I find .gb but no .rom)
How to get a game up and running
How to prevent system crashes (If possible )
And what the hell is Wabbitsign

Other information would be greatly appreciated for those who don't exactly know all the works of programming (Like me xD)

Thanks!