then go into modes get a feeling for them. escpecially the aolion (minor) mode.
after that i learnt the harmonic minor, then i ocasionally flaten the second wich gives you one of the other modes (i forget the name).
if this goes over your head dont worry, and dont try this till u are at least comfortable with the majour scale and its modes. other scales are adatives but they are not a base. and a good base is what is needed to sound solid. the additives just give a bit of creativity and extra intrest. but without the solidness it sounds random.
well thats my opinion. just showing whre you could go.
ohh also being comfortable with a scale is not just knowin the notes it is also understanding them. like knowing wich is the root, third, fith, seventh as well as the others. and understanding how they relate to chords.
hope this helps