I have asked this question before, and this may be where a couple people hit instant roadblocks in their sports betting journey. So Where do you find smart people who are veterans in the mma and sports betting worlds?
#1 pick is the twoplustwo forums, but let me tell you how to navigate. (see pic) 
but dont just trust any degenerate gambler on this site, because believe me there is a ton. The one person I pay special attention to because of their dedication and vast knowledge of the fight game...
and his name is SwoopAE. He has 19000 posts on the forums and he runs all fights through a computer program with crazy accuracy.
The next pick that is a very good source being an ex fighter in the game and a guru on styles and match-ups is a man who goes by "the weasle" on Youtube.
The weasle is currently at an accuracy rate of %71 correct on his picks with a 75% correct pick rate on his fights that he considers strong picks (70% or more to win). If you just tagged along with his "strong" picks I believe you would do pretty good, but stay away from the razor thin bets where you have no clue.
The last source i will give you today is not a person but a resource. It's called BestFightOdds.
As you can see it will show you the date of the nearest event and all the current odds from the main online betting sports books. If you just pull up the odds sheet and listen to The Weasle's breakdowns you can get a feel of weather you are getting good value on the current betting line given to you because the odds are always moving (called "the steam"). Also it will help you find the best deals on sports bets but that's a later lesson. Remember if any good source's intuition is counter intuitive to yours, just stay away.
So subscribe to The Weasle on YouTube and bookmark twoplustwo.com and bestfightodds.com and lets break the bank.