>>648638The pre-leaves, I don't remember what they're called, the thick rounded ones... they're supposed to fall off once the true leaves start growing in, around the point you're getting three-point leaves. If it's happening to the ones in the pictures, and you've only got single point leaves, there may be something wrong.
Here's what you need to keep in mind: plants grow best in their native environment. You need full-spectrum lighting, mild temperatures, fresh air and co2, exactly like nature.
Most people over-water or over-fertilize when they first start out, more isn't better.