MMA Specific Training

I posted recently looking for jujitsu training advice but ive recently moved on to MMA training recently and wanted to train in the gym to help my preformance in training.

So I wanted to ask has anyone seen any good gym workout programs written for mma or can anyone offer any advice on what I should be training in the gym ?

I also wanted to ask I get neck pain from time to either from training or when I wake is there a safe way to work the muscles in the neck ?

Cheers

Richie