I subscribed to GT for a number of years. I came here at a lower intermediate level. I did as manXcat suggested and ran through the fundamentals. I breezed through much of it and dug in once I hit new territory. I went through the blues track since that was my area of interest.

It all helped bring my playing to a new level, so it's definitely something worth considering.

The song lesson library is awesome! A subscription can be worth it just for that!