I usually don't answer training questions because I have a unique situation in my home. I'm always bringing in rescue dogs with baggage so my techniques tend to shock people some...
Hand feeding is the best way to get the dog to bond (trust) you. He has only been with you for a few days now so he has no reason to look to you for anything (he doesn't know you). Take your training in baby steps. Start wtih the come.. I see that he is responding to that. Wait until you have one hurdle accomplished before you bombard him with another command. Once he comes to you when you call him (and I assume you are using high value treats instead of just biscuits) then start on the sit. Leash walk training should be done in a secure fenced area to begin with so that if he does balk and slip his collar you can collect him readilly and start over.
BTW his "cage" is a CRATE and it's not a cage.. it's his home inside of your home and the safest place for him to be when you aren't able to watch him. Keep the door open on the crate with toys and treats inside. He'll get comfortable with having that door open and will use it as a nice place to nap once he isn't threatened by it. This boy needs a lot of life lessons. Once you get the bonding down where he comes to you and is comfortable on a leash you need to take him out in the world and show him that he can rely on you to protect him and that the big noises and moving things won't hurt him. It will take time but with patience and perseverance you can bring this boy around to a wonderful well adjusted dog...
Hand feeding is the best way to get the dog to bond (trust) you. He has only been with you for a few days now so he has no reason to look to you for anything (he doesn't know you). Take your training in baby steps. Start wtih the come.. I see that he is responding to that. Wait until you have one hurdle accomplished before you bombard him with another command. Once he comes to you when you call him (and I assume you are using high value treats instead of just biscuits) then start on the sit. Leash walk training should be done in a secure fenced area to begin with so that if he does balk and slip his collar you can collect him readilly and start over.
BTW his "cage" is a CRATE and it's not a cage.. it's his home inside of your home and the safest place for him to be when you aren't able to watch him. Keep the door open on the crate with toys and treats inside. He'll get comfortable with having that door open and will use it as a nice place to nap once he isn't threatened by it. This boy needs a lot of life lessons. Once you get the bonding down where he comes to you and is comfortable on a leash you need to take him out in the world and show him that he can rely on you to protect him and that the big noises and moving things won't hurt him. It will take time but with patience and perseverance you can bring this boy around to a wonderful well adjusted dog...

