EFT and changing memories fallacy article explains what is going on behind our mind's screen when using tapping and MR.
MR is another technique I use with clients along with EFT.
There are classes available but taking a LIVE Levels 1 & 2 EFT class is a pre-requisite.
Remember, EFT is not a substitute for medical or psychological care, so contact your physician when you need this type of help.
Sherrie Rice Smith
Certified EFT Practitioner
Author of EFT for Christians 5 Book Series