I don't know what you should expect except maybe an overview. You'll want to know how old the babies available are and what requirements there are to adopt from different places. If you have to make $80,000 per year to adopt from country x and you only make $60,000, then that will help you narrow down your choices.
I would want to know the relative health of children from certain countries. I would want to know how stable the programs are and what some of the emerging countries that offer adoption are. Cost will be important. Time will be important. Travel requirements might be important. What to look for in an agency would be good to know. I assume they'll cover open adoption, foster-adoption, and closed adoption as well as the difference between using an agency and using a private attorney. I would want some information on how much time a birthmother has to change her mind and how that works. I would want to know what happens if you get a child who has problems. I'm sure there is more to know, but I would guess that after an overview, you'll find yourself drawn to different choices, and you'll find the answers you need from doing an internet search from there.
I think this will be a good way to learn about what is available, and you may find questions pop into your mind as you're hearing things. Just go and be a sponge and meet some people and have fun! This is the start to your baby!