www.learningthecello.com is a website which I continually update with resources and ideas about learning the cello.
Some of my favorite cellists and cello teachers:
Lowri Blake - Lowri Blake was the first cello teacher I studied with who was able to transform the way I played the cello. She can also sing while playing the cello which is very rare and very difficult to do well.
David Finckel - This is another excellent resource which contains 100 cello teaching videos all done by David Finckel from around the world as he traveled and performed. Go to: David finckel and Wu Han