Step:
1. Learn about the Guitar Hero engine and how everything works
here.
2. Create my custom Guitar Hero disc here.
-This guide contains a lot more information than you'd think, be sure to check it out.
3. Learn about .dtb/.dta Files and the various things I can do with them
here.
4. Learn about the other types of Guitar Hero files including Guitar Hero image files and fretboards (.milo, .tex, .bmp_ps2, etc.)
here.
5. Learn how to fix the Guitar Hero Encore: Rock's the 80's "Corrupt Archive" error here.
6. Learn about FeedBack (dB) and how to use it here.
7. How do I convert a .mid to .chart? How about a .chart to .mid? How do I use Leff's Chart2Mid2Chart Converter? here.