I started using Guitar Tricks as a 57-yr. old absolute beginner on 12/29. I've made it as far as Fundamentals 1, practicing songs in the keys of G & C. I practice chord transitions daily, some very basic songs, Fret Board trainer in Tools, and more. My question is, What level of mastery should I attain before moving on to Fundamentals 2? I still can't do B. F is still very hard.