Here's really an excellent all-in-one from Mike at The IF Life that covers all the basics for how to improve your ratio of lean mass to fat. I can personally attest to the simplicity and completeness of this, and it's really all right there; everything you need.
By the way, I got an email asking about my own progress since I haven't posted anything lately. Very interesting. Even with 24-30 hour fasts twice per week I have lost next to no net weight in nearly a month. I hit 212 and it's like a brick wall. But I feel great and my back, legs, and triceps are definitely larger. I also changed up my routine, such that rather than chest, triceps, abs & legs one day, then shoulders, biceps, back & legs the next, I now pack a full-body workout into that 30-minutes twice per week. It's almost CrossFit in the way my trainer stages each exercise and I just go from set to set to set, never stopping or resting much at all. Overall intensity has increased dramatically, and so I'm pretty certain my failure to lose more net weight recently is due to lean gain.
I'm contemplating a 48-hr fast at the beginning of next week just to see if something needs to be shaken loose somewhere. Of course, ultimately your weight is just a number. I'll want to get my BF down to around 10%. If I do that then it doesn't matter what I weigh.