changing personality in my pom

Question
hello, i have a one year old male Pomeranian (not neutered) which recently has completely changed over night... I don't really understand what took place and what clicked off in his mind... but he suddenly turned and got a really ugly personality.... he started to bark at strangers like never before, and when i tell him NO when he's miss behaving he starts to growl at me and launches to bite me.... he actually bit me the other day.... i've tried to spay him with water, that didn't work. I've tried keeping him in the crate for a hour after he's been bad.... that doesn't work.... I've tried to reward him for good behavior and that didn't work!.... i've tried to tell him NO nicely that didn't work, yelling didn't work, closing his mouth when he bites me didn't work....i think i've tried it all... everything i've seen in a traning video and nothing is working... he Jumps at people when he sees them.... he barks at any noise outside my door, and now he's biting.... i don't know what else to do... i love my little dog, i don't ever want him to bite someone and then having to put him to sleep because of it.....i'm home with him all day, and he travels with me every time i leave town... i really can't afford to hire a dog trainer... so plea give me  some good advice i've not heard before....  PLEASE help me
thanks

Answer
It is hard to tell without seeing the dog in action and without seeing what is provoking him but I would suggest you get the Cesar's Way book and watch "The Dog Whisperer".  I have been and I have tried several of his techniques and they have worked.

First of all you cannot be scared, anxious or nervous as your do will pick up on those "vibes" and incorporate them.  Secondly, you will need to revert back to "puppy training".  He may lash out but nearly all dogs would rather NOT be the alpha and are only acting out as they percieve that their owners are not in that role and feel obligated to take it on.  
Something that may work for you is to use some of Cesar's "rules".  Walk your dog at least 1/2 hour every day without lettikng the dog sniff or pee without your permission.  It is called migration walking.  Purposeful and sort of brisk.  Get out its energy nd frustration.  With every distraction  (AS SOON AS THE DOG STARTS TO BECOME DISTRACTED) give a gentle but firm tug on the lead.

Watch his show.  You will get a lot of great ideas.  Don't back down to your dog either or it will learn that behavior works to keep you doing or anyone else doing what it wants.  Also never yell at or hit.

Best of luck.

This can be turned around.

-Trish