Asus Nexus 7 2nd gen Rom Install Tips
1. First you need to unlock your boot loader, this can be done by fastboot commands or by using a utility. When the bootloader is unlocked you can install a custom recovery image. I recommend TRWP recovery or Multi rom recovery, but clock work mods is also ok.
2. Once you have unlocked the Boot loader and have a recovery install you can root you device by flashing a root zip file or just install a custom rom that has root. Recommend Eclipse, AOKP, CM10, or Code name adroid/cna roms
3. Because this device has a unlocked bootloader you can flash kernals to the device to over clock and tweak it for better performance. Make sure you do lots of research on the kernal before flashing, and make sure it is compatable with you rom.
Asus Nexus 7 2nd gen AOSP rom install
Asus Nexus 7 2nd gen unboxing and review
How to unlock the bootloader on the Asus Nexus 7 2nd gen
How to root the Asus Nexus 7 2nd gen
How to install CM11 on the Asus Nexus 7 2nd gen