Yes, I'm a Ricardian. Well, ok, not a fanatical one. I do believe he holds some responsibility for the death of the young princes, but more because he neglected to safeguard them properly than because he directly ordered their deaths.
August 22 marked 601 years since Richard's death at the battle of Bosworth Field or Radmore Plain, an occasion marked solemnly by Ricardians around the world.
Want to learn more about Richard? Why not visit the following sites:
The Richard III Society
Canadian Branch of R3 Society
American Branch of R3 Society
If learning in a more informal manner is your thing, why not find a copy of Sharon Kay Penman's The Sunne in Splendour - it's a great intro, though keep in mind, it is a work of fiction, so don't use it as a research source.