Hacker Khan
Yurt Dwelling, Yoghurt Knitter
Thanks, for 6 quid in can't hurt can it?
I'd say not if you just focus on one or two specific things relevant to you. For example you may not need to worry about using a club to get to the back of the green (as discussed on here earlier), if so then ignore it. That's been a great thing for me, but it's horses for courses.
It may well not help if someone tries to remember/implement 5 or 6 different things at the same time, plus the inevitable swing thoughts that should be banished. Actually using some of the stuff in NGT has meant I think less, sometimes no swing thoughts, and my game has improved.
Try and keep it simple stupid as they say.