Janet...
I will confess that I wish you had posted about this pending purchase before making it (very seriously).
I have been an active classical (amateur solo) bassist for decades, and also have a cello. If not careful it is easy to get really burned through Craig's List/eBay.
At the very least, please have the instrument checked out by a qualified luthier. Depending on how the instrument is set up, it could be anything from fairly good to an absolute nightmare needing substantial adjustments to bring it into proper playing condition. The position of the sound post, the bridge, bridge height, string height above the fingerboard all matter. Even moving the sound post 1/8" can radically change the sound of the instrument for better or worse.
It is far easier to play an instrument that has been properly set up. It becomes easier to produce a decent tone with the bow, and it will also help with left hand fingering technique.
Hopefully the instrument does not have any serious structural problems (or if so, that the problems were disclosed). Some problems are easy fixes, others frightfully expensive.
Depending on the condition of the bow, you may want to get it rehaired. It is much more difficult to make a good tone with a bow that has worn out, brittle, hair. Also, depending on the age of the strings, they may need replacing (but at least cello/bass strings last much longer than guitar strings).
Anyway, I really do wish you success with the cello, and that you truly do have a lot of fun with it. Among other pieces, I hope you are eventually able to work up to at least some of the Bach Cello Suites.
Oh, one other thing, if you could get at least a few cello lessons that would also help. One can get away with quite a bit, but without learning proper technique, you risk hitting a ceiling, as beyond a certain point, decent technique is required in order to simply be able to play the repetoire.
But again, have fun!!!!