Hi, Xenastia and welcome to FZ.
I had donor IUI as a solo flyer and one of my very good friends had donor IUI as her partner (now husband) had azoospermia both of us achieving successful pregnancies after several attempts.
Generally, a first consultation will take your history and confirm that all the relevant tests have been done and are clear. They will also want to make sure that both you and your partner have considered all the aspects of donor treatment, including what you will tell the child/ren one day. It may or may not be a requirement that one or both partners (individually and seperately) attend some counselling sessions as well - it certainly was a requirement in my case as well as for my friend.
Thereafter they will try to match your partner to a donor (yes, your partner not you) in order to have some resemblance to him - i.e. height, colouring etc.
If all that it clear - well, then it is on to treatment...
At your appointment, make sure to ask what protocol you will be on - natural, clomid or injections. If either of the latter, check how and when monitoring will be done.
Wishing you all the very best and please let us know how the appointment goes...