When first starting on the path to building strength and muscle, it is important to keep things basic. You want to use a basic strength building routine, basic progression scheme, and a basic diet. This gives you a base to build on later and there is no reason to complicate things until you have to. It also makes progress easier to track which can be very motivating.
A simple full-body routine that's done two or three days a week is powerful tool when you first get started. It's a time-tested method for building muscle and strength. There is a good section on this forum devoted to full-body routines, you should check it out and do some research. Good luck to you.