I have been doing basic routines for 3 years now.I have never done advanced stuff at all. I have taken only seven, three kilo tubs of protein during this period and I have gained 24 kilos.(keeping in mind, I have a
fast metabolism) My routines would be the same for 6 weeks straight, take 1 week off, then come back and change routines a little for six weeks, 1 week rest and then repeat. Sticking to the basics does help but you must always perform routines in good form and not cheating. If you can do this with good food intake, 8
hours sleep, and an increase in weighs, you too can gain muscle with no problems.