Assuming that you are an absolute beginner, if you really are dedicated , it shouldn't take you more than 6 months to get used to the idea of playing guitar. I used to take tuition for first 4–5 months , guy did make me technically strong but in terms of knowledge , it took me no where. Then he started out with chords and thats where my journey of exploring guitar started. I set out to find how chords worked ,how they were formed and many other things.