I was looking for some information that would improve my right hand cello bowing and left hand cello fingering. I need to get the scratchy out. I need to get the smooth and dynamics in. My first Google hit I came upon was this post that is from Cello.org. 

It is a sort of long post. It is section labeled, making it easier to go to either the bowing or fingering. I do, however, suggest the entire article be read, it is not a book, it is just longer than most posts. 

Cello Technique Made Simple by Tim Janof

I like the way he wrote it. It was like Tim Janof, the author, was in my house watching me. It was like Mr, Janof was in my mind listening to what I am thinking as I am anguishing over my lack of smoothness and clearness in my playing. I am assuming that after being in my mind that he has retired.

His thoughts, as he was playing and realizing his issues, sounded like me. His reasoning through the issues, and why the solutions work is very much to the point, not like me. What he wrote added to what my instructor patiently tells me.

If I could play in front of a mirror, it would be easier to correct my issues, but the reversing of the mirror really confuses me with both cello and violin. Maybe if I work on that, I can get used to it?

I highly suggest that you, as a cellist, violinist or violist read Tim Janof’s article.