Bad Behaved

Question
Ok, so about a week ago, I bought a 2 month old Ferret from Pet-Co. He's white with Grey on the tips of his fur and his name is Slinky. There's a few things with him that I'd know how to fix/change.
1: Every time after I fill his food dish with new ferret food. He digs it out all over the cage.
2: I've been trying to potty train him to use a litter box, but he will only poop in a corner of his cage, or around the room. He won't go near the litter box, making it really hard to clean because it sticks to the cage.
3: He bite's a lot, but it's often/always a "Love Bite" or a "Play Bite" and it's not very painful, but every once and a while, he'll bite hard enough to pierce skin and draw blood, witch isn't to pleasant when he's biting the tips of your fingers.
4: Snacks, I was reading on what to give ferrets for snacks when training them, and it was saying that ferrets want what you're eating, but I was reading not to give them fruits or high fiber foods. Problem is, I wanted to train my ferret things like rolling over and stuff, but I can't because he doesn't accept any type of treat, I was using little pieces of Chicken meat, about the size of raisins and he won't touch them, nothing I try to give him, he eats, except his ferret food.

P.s. Not to important, but do ferrets usually have a "Common hiding place" because I've been missing some headphones since I got my ferret.

Answer
1: Every time after I fill his food dish with new ferret food. He digs it out all over the cage.
Very common behavior as ferrets are diggers.  Use a ceramic dish that is heavier so he can't tip it and/or place a mat under the dish to collect the thrown food.  Since he is young, he will probably grow out of this.

2: I've been trying to potty train him to use a litter box, but he will only poop in a corner of his cage, or around the room. He won't go near the litter box, making it really hard to clean because it sticks to the cage.
Place litter boxes in the cage corners and try different litter, making sure they are all paper based litters.  Ferrets use the litter box often, like every few hours so make sure you pay attention to him when he is out and about and place him back in the cage, in the litter box every so often to remind him to use it.

3: He bite's a lot, but it's often/always a "Love Bite" or a "Play Bite" and it's not very painful, but every once and a while, he'll bite hard enough to pierce skin and draw blood, witch isn't to pleasant when he's biting the tips of your fingers.
Again, he is young and babies bite.  He is testing out the world with his teeth just like a puppy or a kitten.  Try not to let him get your fingers and make sure to wear shoes when he is out playing to save your toes.  He is full of energy and not always in control of his actions, like biting.

4: Snacks, I was reading on what to give ferrets for snacks when training them, and it was saying that ferrets want what you're eating, but I was reading not to give them fruits or high fiber foods. Problem is, I wanted to train my ferret things like rolling over and stuff, but I can't because he doesn't accept any type of treat, I was using little pieces of Chicken meat, about the size of raisins and he won't touch them, nothing I try to give him, he eats, except his ferret food.
Ferrets should only be fed a high quality ferret food like Totally Ferret or Natural Gold.  Totally ferret makes a great ferret treat which you can use, but you can also use their regular food.

Each ferret generally has their own "special" hiding place.