Its actually pretty simple. Whatever you read in treble cleff, just take the note up two spaces. If its in a space, take it up two spaces, if its on a line, take it up two lines. If its sharp in treble cleff, you'll have the natural note in bass cleff. I could explain the rules of its relations to sharps and flats, but that would take a while and Im a little pressed for time. But thats a good tool to use to get used to hearing and seeing the similarities.