Jperm is generally pretty good but didn't explain all the algorithms, when I learned a 4x4x4 a couple months ago I used that plus this http://www.rubiksplace.co

Jperm is generally pretty good but didn't explain all the algorithms, when I learned a 4x4x4 a couple months ago I used that plus this http://www.rubiksplace.com/cubes/4x4/ http://www.rubiksplace.com/cubes/4x4/