Check out Mat's method for teaching new students how to learn new cover songs!
As he explains in the video, start simple by just playing a simple quarter note groove and then build it from there. The most important thing when learning new songs is that you stay in the groove of the tune! Often times when try to learn the full version of a song we get so bogged down by all of the technical requirements that we don't even know where we are anymore, or if we are even playing in time.
So with Mat's simple method, you are guaranteed to develop a deep pocket before trying to advance into the more difficult stages.
Check out Mat demonstrating this concept with the song Sunflower by Post Malone