Article on tuition and practise habits
Above is a link to a fantastic article which covers many of the classic questions surrounding taking guitar lessons and general practise habits. It covers in detail the main philosophy I generally tend to teach and agree with, which is little and often for practising rather than spending 3 hours noodling the same thing you always do "this gets you no where fast and you normally see very little improvement". It also covers the advantages of taking lessons and how to correctly structure your practise time even if its only 10 minutes a day. In my opinion taking lessons is the best thing any guitarist can do for their own playing. Although I do not take private lesson myself any more I still crave new knowledge and skills on the guitar.