the toe next to my big toe (is there a name for that?) has a nail that always grows down into the skin. is there anything i can do about this? and all my nails grow to a certain point then they would get well i don't know how to describe it but it looks as if they have like little cracks in the corners of the tip. is there a way to prevent chipped nails or something?

If the nails are curling into the soft tissues at the side(s) of the nail, you may very well have an ingrown toenail. If they are yellowed, thickened, chipping and dry, you may very well have a fungal infection. See your doctor for a proper diagnosis before beginning home treatments.