PTP is power to the people. Revolves around 2 sets of 5 on a given exercise but on the 2nd set you take 90% off the bar. At the beggining of the cycle you start the weight at 80% of your 5RM. So if you have a 250 5RM squat.
Day 1: 200×5 then 180×5
Day 2: 205×5 then 185×5
You keep on following this pattern until on a given day you can’t do 5 reps with the staring weight and the cycle begins again at the new 5 RM. Cycles are usally 9-16 workout.
Westside for skinny bastards go here
https://www.defrancostraining.com/articles/archive/articles_westside.htm