You could join this social group here at animesuki called "Artists Alike and from Afar". Its a collection of artist that share drawings and tips/advice with everyone in the group haha. I'm in it too.
As for tips, well.. if you're comfortable with drawing straight onto photoshop digitally, thats fine too. but most ppl draw a draft on paper, then lineart it digitally on photoshop(so kinda like trace their paper sketch). You'd have to look into using photoshop layers, you wanna keep ur lineart on its own layer, and colours on its own layer too. Usually you just use the brush tool, and the eraser tool. ofcourse, other tools come into it too, but i think if ure a beginner, those 2 should suffice for awhile. Get comfortable with them first