i'd like to make a caveat on this. The OTA update issue with root users might be going away soon. I know a lot of devs, Vaelek in paticular, is working on making OTA updates available during root.
You have to ask yourself if you're content with the phone functioning at its capacity. If you want better battery life, then root. If you want better performance, then root. If you want to increase your 4G reach, root.
If you need help ask. But please search first. Just browse the titles of the most recent 3 or 4 pages. You dont even have to use the search button. The most annoying thing is a user who is just lazy and doesn't want to put in the effort. If you truely are confused and need help, then ask. We've ALL been there, I don't care if your Steve blo-Jobs. We've all been there. Rooting is great because it gives you total owner ship of your phone.
Keep in mind that there are multiple ways to root, (everyone has their preference), there are multilpe ROMs, kernels, and other .zip's that will effect your phone in a unique way. You'll have to try out different combinations. What works best for me is in my signature. You literally have to find your flavor (pun intended).
Let us know if you need help. So far the members who have posted in your thread can answer any question you've searched and don't understand