I live about 15 miles from closest gym and due to my job would not be able to make it there except for every other Sunday. I am eager to lift, and am prepared to spend up to $500 on weights, but do not know where to start in terms of which weights to get and what the ideal setup and regimen would be for me at home. I also do not have a ton of free space for massive gear. Since taking RP I've just been doing push-ups and running, but want to take this to the next level by building mass. How should I proceed?