AvatarNathan Richer

re: FMS level 2 costs – check this page out for a schedule of upcoming Level 1 and 2 certifications in the US and international: http://www.functionalmovement.com/events. It’s about $750 to take level 1 and 2 together in a 3 day cert.

I think in the case of corrective exercises, the ones that are bodyweight have little danger to you if they are done with great form. there are some weight bearing ones which are a bit more dangerous but in theory if you have progressed to working with weight, you should have good movement patterns without weight.  the issue is more of getting to the root of the problem quickly versus doing too many exercises.  
certain exercises have more of an effect on a result of the FMS than others. so you want to optimize your path back to healthy, effective movement patterns and not waste time doing things that you didn’t need to do.
reading the materials and being familiar with them will make the cert more effective, if you are not encountering the material for the first time in the class. it can be overwhelming if you’re trying to process it first time live.
i first took the FMS level 1 online cert. i read the books, watched the DVDs. then i decided to take level 1 again along with level 2 because the philosophy changes year over year, even though the test itself is relatively stable now.  hearing it live from an instructor versus reading it yourself is definitely different and worthwhile.