Almost, Jenny. Piano music will be over two staves though (left hand and right hand.) You only need the top staff.
Also, piano is a "Concert pitch" instrument. A clarinet is a transposing instrument. Technically, you'll need sheet music for Bb (B flat) instruments... NOT Concert ones.
Don't worry about this right now if you're just beginning. For now, all you need is to read the top line of piano music only. Ignore the Bass staff. The on;ly problem with this is that you won't be able to play along with a record. It'll sound in the wrong key.