Rod Jenkins for form work - he does clinics all over and it would be a good investment. All of the other suggestions are good as well. Moe and Blackmon are both excellent for self study and the book Shooting the Stickbow, 2nd Edition
by Anthony Camera is a good resource also. I also like to review MBB III.
For myself looking up and finding a local coach and taking part in local archery clubs and events and networking has been crucial.
Being willing to not shoot targets until your form is ingrained will speed up the process.