There are many good books and online resources available. I have provided some below. I was very fortunate to be guided by my old friend Greg Parker who runs the New Forest Observatory. Greg has written one of the most helpful books I found and I strongly recommend it, it will save you some pain and some money too!
Greg Parker – New Forest Observatory :
http://www.newforestobservatory.com/
Greg’s Excellent books for those wishing to enter into the world of astrophotography:
Making Beautiful Deep-Sky Images , Springer, ISBN 978-3-319-46315-5
and for inspiration:
StarVistas, A collection of Fine Art Astrophotography. Parker, Carboni, Springer: ISBN 978-0-387-88435-6
