I'm a bit new to this magic lantern thing, its the first time I have heard of it on the forum!

You won't be able to live without it after the first ten minutes. 

Magic zoom is great. One touch of the mag button goes full 100% for a quick sharpness check.

The extra info on the main screen is nice to have.

In live view, the grids and portrait framing is handy. Too bad we can't have a 9 square grid in the viewfinder though.

In macro shots and other critical focus shots, the shutter half-press options are nice, such as the 20 seconds hold. (Like holding the button at half press, so you can do other things like hit AE lock etc., and keep your shooting info alive in the VF)

One "trick" to mess with it, is to install it on only one SD card. Swap cards, and it's either there, or not.

Remember, a press of DISP pops up full help on any item that's highlighted. You can also read the full help complete if you want to read it. Your screen becomes a smart phone of sorts, with enough resolution to see it pretty good too.

I suppose it goes without saying the garbage can button brings up the ML menu, where the menu button brings up the standard Canon one. Menu in playback brings up extra ML options. Also, it's easy to turn on/off the advanced ML menu. The advanced one can be overwhelming for newbies.