N00b here with rooted phone, need a root 101 course.

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http://androidforums.com – So about a month or two ago I was lucky enough to buy a Galaxy Nexus (gsm) from someone on Craigslist and he already had it rooted when I took possession of it. The phone has been great and I have even tweeked it a little thanks to the AOKP ROM. It's running ICS 4.0.4 It has a 3.0.34-CMPLUS-Tuna Kernel and maguro milestone 6. I would like to upgrade to Jelly Bean, but to be honest I can't really follow the instructions I find on here, I'm not stupid when it comes to things but I feel like I am coming to the party late and because I didn't do my own hands on root just don't have th (General)