Hey everyone!

As the title says, I'm new to lifting. I've tried a few things on my own but have never had a routine or a diet and have no idea where to begin. I sync'd up the "Classic muscle mass gaining program" routine to my phone and plan on getting started this coming Monday. I'm sure this is a common new guy question, but how do i determine the starting weight for these exercises? I don't want to cheat myself, but I don't want to injure myself either. I mean, once i've finished all the sets for an exercise should I be at muscle failure? My goal is to bulk up.

I'm 6' and 150lbs, and thats only because i've been on recovery from ankle surgery. I was 130 before so i'm skinny and have a nice little gut for the first time ever. I have a fast metabolism that is starting to slow, so I haven't always had a healthy diet. I've cut out soda, drink a lot more water, and try to get as much protien and carbs as possible. If anyone has some advice, insight, or a good link to some info i can review, please point me in the right direction. Thanks