Hi--you are in for a "real treat", if you look at things that way!
This site--http://www.cms.hhs.gov/SNFPPS has links to Medicare A/PPS/CB information. The RAI Manual also has a very understandable overview, and teaches how the OBRA assessment schedule "meshes" with the PPS assessment schedule.
This site will link you to info on Medicare B--http://www.cms.hhs.gov/MedicareGenInfo/
This site will link you to info on Medicaid--http://www.cms.hhs.gov/home/medicaid.asp. But your state will have specifics about required documentation, coverage, levels, eligibility, etc.
This is a site with general MDS/RAI training--
http://www.mdstraining.org/upfront/u1.asp-- actually
reading the RAI Manual will provide the same knowledge as internet study or AANAC, NRAI, or any other seminar training. We all learn differently, so you need to absorb knowledge however is best for you.
Unfortunately one can't become "smug" or overly pleased

when/if certified and understand the difference between "limited" or "extensive" assistance, and can predict which of the 53 RUGs a client will "fall" into--because many changes are coming over the next months and years...which will change almost everything...
So tis an exciting endeavor, and will hold your interest, if you remain "cool"

, and keep frustrations in check---share/learn with/from others, and "ignore the small things...and everything is small".
Good luck!!
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