I was advised to get 'Understanding Birds of Prey' by Nick Fox. Has pretty much all you need to know! That combined with reading on the net will fill your head with allsorts of ideas, I think the BEST information I gained was a dairy of a young chap on here with his first harris hawk and it is an AWESOME read! Made my mind up in which direction I wanted to go and and some of the drawbacks involved. Give it a read! Also, scout about for local falconry clubs to get in with a crowd!
Good luck