Always happy to help..
Basically the way it works is this, muscle is energetically expensive to maintain. So the more muscle you have the more calories you use in a day, and the easier it is to get lean. For beginners and especially someone of your age (I’m 27) the Anabolic diet will allow you to initially gain muscle while losing fat, this is a very hard thing to achieve and I think the Anabolic diet is the best way to do it.
However I’ve also seen knowledgeable people suggest things like Barry Sears Zone diet, or Tom Venuto’s eating plan. I’ve tried both as well as Atkins and those stupid liquid diets. I found the Anabolic diet to be the simplest and the easiest to deal with, as well as the most effective. It is basically, eat fatty meat during the week, eat whatever carby crap you like on the weekend. You don’t need to count calories or anything just check yourself out in the mirror if you haven’t lost weight, eat less this coming week, if you’ve lost too much or aren’t looking more muscular eat a bit more. Diet is one of those things you have to experiment with and see what works for you.
When it comes to lifting weights though, Rippetoe is right and that is pretty much it. I’ve tried various other workout plans, and Rippetoe is on the ball. His routine is designed to get beginners strong and muscular as quickly as possible.
As far as low testosterone goes, when I was at my fattest I had myself tested and my testosterone was also a bit low. I went to an endocrinologist who basically told me he wouldn’t write a prescription for me, and to quit drinking, lose some weight, and work out. I followed his advice via the diet plan and lifting weights, and now I feel like a monster. That is literally the only way to describe it, I’m strong and my mood is a thousand times better.
I put it all down to lifting weights, eating a ton of red meat and eggs (a normal day for me is 1.5 pounds of ground beef and 10 eggs, sometimes after working out I’ll chow down a steak), and severely cutting down on my drinking (from 5 beers a day to 6 over a weekend). The meat actually is the secret. Cholesterol is a precursor for testosterone, the more you have, the more T you can make. A lot of people will say “you can’t eat that many eggs and all that red meat, you’ll have a heart attack”, but the truth is young men in their 20s don’t die from heart attacks.. The more serious issue is being overweight and having a cock that doesn’t work.
Best of luck to you, personally I’d skip any sort of testosterone therapy.. By having it added externally you’re only encouraging your body to make less naturally. Just eat meat, and lift heavy. You’ll never meet a man who can squat double bodyweight who has low testosterone (I personally can’t yet, but I’m working on getting there).