There is a lot of information out there and it is easy to get lost. What I find is that many videos focus on a specific lure/presentation but don't spend as much time on application.
To anyone I would recommend that you don't just aimlessly watch/read random videos. Go into it with a specific question you want answered (e.g. how to fish weed edges) and stay focused on that question.
With regards to setup, you can catch fish on any setup. As a beginner, I wouldn't pay much attention to the different rod/reel combinations that are discussed in the videos, in fact, I usually skip over these parts myself. Keep in mind that one of the main reasons for the different setups is to improve hook-up ratio (which is very important for the pros), but as a beginner even if you lose a fish, you gain valuable knowledge by just knowing that what you are doing is at least getting the fish to bite.