Here is a pretty good article I ve found.  I've been teaching in Port Saint Lucie / Fort Pierce and Boca Raton area for a number of years.  I have encountered so many students with the wrong idea.   So here are some answers:

Be Careful of Free Guitar Lessons.   by Tim P

"Be careful of free guitar lessons. All over the internet you will find people giving you free guitar lessons and tabs. The problem with most of this is that they are just inaccurate information. Most of the tabs are illegal, wrong, or not quality. Now you can't argue with the price, but you won't really learn anything. So you decide you are willing to pay a little amount of money, maybe like $40 - $50 on an online ebook promising you how to learn in 3 days, Jimi Hendrix, and power over the world. Let me guess... That didn't work either.

Guitar lessons online should include videos, pictures, and print outs. They should also be taught by a professional guitar player. Guitar lessons should just be a small ebook you can read in 15 minutes. Make sure you get your money's worth of information. Your guitar lessons should include a step by step system that is proven and tested."

If you want answers to all of your questions,  Mack Okubo's Guitar / Bass Lesson is available in Port Saint Lucie / Fort Pierce and Boca Raton area.   Please click on "Lesson with Mack" for more info.