Sleeping Baby

Hi Everybody! I had my first baby Sept 23, I am having a hard time getting him to sleep in his crib. He will sleep on the couch or in my bed for 3-4 hours at a time at night, when I put him down in his crib he will only sleep for about 1-1/2 hours. Does anyone have any suggestions or ideas? I don't have any clue what to do, I really dont want him to sleep in my bed with me but I need some sleep! He eats about every hour and a half during the day so if he gets up every hour at night that doesn't leave any time for me to function. I know that everyone of you have probably felt this way, I just need some help. Please!!!!!!! Thanks :)