Search:

Actually no.
The blue is a very slow cutter even with slurrly, but more importantly, the blue is very soft so it always generates a slurry, even if you start off without it.

1) You don't have to lap often so sandpaper on glass / a tile works fine.
2) 6x2 seems to be good value for money. I have a 6x1.5 and it works fine.
3) depends. for finishing i work without slurry....