It is absolutely worth it to install considering that there is no real danger of bricking your camera anymore and because it takes like 10 minutes to do it.
If you want tutorials for Magic Lantern or anything to do with video or photo just search on Youtube, you can literally find a guide to about anything (Firmware, software, techniques,gear).
My favorite tools are:
Zebras for exposure
Focus peaking for critical focus
Custom white balance
Better ISOs for cleaner footage
Simple Timelapse tool