Learning a new instrument??!!?

As long as you practice the cello, it is not that difficult to play. It is just like playing any other instrument. And concerning the clef and notes, it's not that hard. If you just memorize and learn your notes it's quite easy. A beginner cello should cost any where from $300-$400. As for size it really depends on your size. Generally, taller and bigger people get 4/4 (full size). The smaller you are, the smaller cello you get. So it would be wise for you to go to a shop and see what size you are. Hope that helps!