Catman

Make sure to take a "before picture", will be following this.

If you're eating more calories than you burn, you'll gain weight. Assuming you're eating a reasonable amount of protein, and are providing stimulus (i.e. working out), you'll gain muscle. No need to make it much more complicated than that when starting out. Bodyweight workouts can be incredibly difficult, especially if you have access to a pull-up bar and/or rings. I wouldn't worry about a target weight, just focus on slowly increasing your weight and making sure you're moving in the right direction.

I think most of it's been covered, but tempeh (fermented soy) is also worth a go.

Thought I'd get into the habit of posting more often by starting with an introduction. I'm a late 20's semi-professional soccer player living in Toronto who went vegan in the summer of 2017. During the offseason, I run, lift, and do calisthenics for fun.