I'm a 6'1, 165 pound, 21-year-old looking to gain 20 pounds over the next 6 months. I have my calories and protein in check.
Through my own research and others' suggestions I have been pointed in a good direction for programs. The biggest mistake small guys that need to gain strength and size (outside of not eating enough) is jump from program to program. I want to stick with a program for a couple months and see my progress and then access again. The programs, that I think and that others' have suggested to possibly be beneficial to me are:
Starting Strength by Mark Rippetoe
5/3/1 or Boring But Big Program by Jim Wendler
The Complete Power Look Program by Christian Thibaudeau
Greyskull LP by John Sheaffer
German Volume Training by Charles Poliquin
Westside for Skinny Bastards by Joe DeFranco
For my goal of gaining 20 pounds in 6 months while of course getting stronger, which program would be best for me to try and start first?