Ok, so I get where you are coming from. I am a relative noob at this. My TB is my first android phone. I debated to root or not for a while but felt that the benefits outweighed the risk. I do like to tinker and I will typically put in the research first.
If you are technically inclined and willing to watch the vids in the above posts, (*recommend the adb method for absolute postitive outcome) you will have no problem. I did it one night while my wife was snoring next to me. Took me about an hour cause I was super careful. But it went as expected and i learned ALOT about how the file structure and adb tools work. There is a very good chance you are going to need to have at least a basic understanding of that in case your phone locks up for any reason (not talking bricking here...but just hiccups needing fixes.)
Anyway, take it in small bites cause it can feel a little like drinking through a firehose. The effort is definitely worth it and you really don't need to pay someone -- when it will cause issues for you when its 1am and you need to correct something on your phone.
Good luck and you are in the right place, this forum is awesome...lots of experts ready and willing to assist!