Okay, if you cannot afford a class, go to the library and get a dog training book - everyone has different preferences, but wee which one appeals to you. That's the good thing about the library - it's free as long as you return the book on time, and many will let you renew a book online if you need to keep it longer. Removing your hands and attention from availability is better than the nose tap, tapping him on the nose actually may seem like you are playing as well. Also, make sure you have plenty of chew toys and ropes around, so there are things that are good for him to chew, so if he seems to want to nip you, offer the chew toy instead.

Start with basic leash training, and then on commands like "sit" and "down" - these can even prove useful when training him not to bite, as it will distract him from the biting.