Transposition

Hi,
I have the printed music for the old folk tune 'Sprig of Thyme' arranged for beginners to play on the folk harp, in the key of C. I play that, but want to transpose it to the key of F to suit my voice for singing. I know how to do that, and have done it manually on some blank music paper - the notes are correct but the sheet looks a mess and is difficult to read when playing. It there a fairly straight forward way for me to print out the music in the key of F. eg Am I able to photocopy the music I have, before changing the key?
I have never use any music program.
Kathy