Welcome to the boards, and to the wonderful world of cello! You're wise to be looking for a teacher. I wouldn't worry to much about learning at this point; once you find a teacher you may find you need to "unlearn" much of what you have managed to teach yourself. But who could resist at least "playing around" with their cello while looking for a teacher?

You didn't mention anything about your cello. Is it a rental? Has it been set up by a luthier, or is it by chance an Ebay "special"? The strings may be too low to the fingerboard, you might need a new bridge or maybe planing or scooping of the fingerboard. A good "set-up" is essential for the instrument to play properly.

Good luck to you!

I am Curious Cello