Congratulations! Unfortunately I'm not a brass player so can't offer any useful playing advice, but there's a good music shop near Brighton (UK) that deals online and has a range of tutor books - any good to you?

http://www.netmusicalinstruments.co.uk/acatalog/trumpet_tutors.html

What kind of music are you interested in doing - Jazz? Baroque? Bands? Best of luck -

Bonnie

PS: Ever see the film Brassed Off? It's brilliant -