[Redsky139]

Speed mod won't help at all for technique, only for reading speed. Just playing often will help. Being able to hold a precise rhythm in your mind can help avoid sloppy play when you get better. Also you'll be learning reading skills that force you to read rhythms and sometimes pitch relevance at the same time.

Then, use those skills to learn how to sight read music (the real kind, not tab). Oh, did I mention you should be playing guitar about 3-8 hours a day throughout the process?