try EADGB (like a guitar)..
i tuned my 6-strings BEADGB..
the high-B makes it easier for chords playing..u only need one finger G-B (Maj 3rd), D-B (Maj 6th), A-B (Maj 9th), E-B (P 12th), B-B'(oct)
just need to practice shifting up a fret when playing melodies :D (which im still practicing)