I am a big reader, so I'm happy to see others recommend some books that I haven't read yet- I'll be checking them out! The 3 books that I forced DH to read (as he would rather hear about the important things from me rather than read adoption books
) :
The Open Adoption Experience - Lois Melina
Raising Adopted Children - Lois Melina
Secret Thoughts of an Adoptive Mother - Jana Wolff
The first two are great with giving information, keeping it simple. The last one I liked because it shows the insecurities and fears of an adoptive-mom-to-be and is reassuring to those new to the process that it's okay to be scared or have irrationals fears at times.