I also want to know which realm has the most English speaking players on it.. that one will probabbly be the one Im going to go to. And for Knights, which weapon is best? Slashing, Piercing or Blunt? And if it is Slashing, should I put all my skill points into just Slashing and Tactical?

All realms will have a fair amount of English speaking players. The easiest way to find your way about is to find a clan. Check out this link for a list of English clans from all realms.

I'd say that an Alsius dwarf would be best to play a knight. As for the amount of english speaking players, I would probably say Syrtis or Ignis...Syrtis is the most populated, but it has lots of spanish people as well. There are also many large english clans in Syrtis like Inquisition, GoP and OoD.

usually knights prefer strength, so you are better off with a dark elf in ignis

And Esquelios have mroe constitution than any other race, not moloks ;)

Could be there's a large difference in playing style between realms, 'cos most Alsirian knights I know put more stats into constitution.