You will not have the speed of Rock Stars for a while; write that off your list of things to worry about. Chris Schlegel has hours of stuff on this site that will improve your knowledge and playing and explain all the “why’s and how comes” music works the way it does.
Then when you feel like you are improving by small steps and are ready to take on more, check out other instructors. If you use this place as a tool, practice along with an instructor for 1 hour, then just play other videos for an hour of different instructors and styles. When you watch the videos for the hour, if you can see both hands, always watch the Right hand. If you only have one hour a day, still split it.
Last time I checked you could by a MP3 player that will also record for about $25 bucks. If you have the money buy one, record yourself playing what you know now the best you can. Then try what I said above and add just watching videos and watching the Right had for 2 months, then record yourself again.
Too many people think the sound and magic of playing a great guitar lives in the left hand, but the true magic of guitar playing is in the right hand.