When I asked my doc, he said WebMd. It's nice but it's a 15 minute read and nonspecific as far as the different types of RA.
Healthinfo.uclahealth.org has some pretty solid and extensive info
creakyjoints.org has some very good and specific information about the types.
Separate B6...100mg once daily with food. My B12 was ok.
Mayo and Cleveland clinics have sites too. KRISTAKAYTX, get your B6 and B12 levels checked too. I had neuropathy in my feet once when my B6 level was bottoming out. Supplementing cured it.