A keyboard doesnt teach you fingering, you have to do that yourself. If you google there are many piano tuition sites that set out basic fingering exercises. Your best bet is to learn the correct fingering for all your scales (whilst learning the scales themselves) as a very basic pointer if you were to play the scale of C, you would use fingers 1,2,3,1,2,3,4,5. this works both hands (left going down the scale, right going up)starting on C. There are a couple of anomilies, the scale of F in your right hand runs 1,2,3,4,1,2,3,4. This is because the 4th note in the scale is bflat. Left hand F going down is still 1,2,3,1,2,3,4,5. There are several other scales that use a 4/4 fingering instead of 3/5 due to the position of the notes, but youll soon naturally find the easiest way is usually the right way. Your next step would be to practise broken chords.. Hope this helps, but you cant short cut practice x