I was struck by the 40 rule that waitinginnj posted about...that was my thought, too, initially, and I even a couple months ago started a savings account towards that end. Then a while back I realized that I didn't have to wait til I was 40, and with waiting lists and all, 35 would be a fine age as well, and probably a better one for me.
That, of course, is slightly over 3 years away, so I am working to get my credit cards paid in full (I don't carry a lot of debt, but I don't want any), as well as learning and preparing as much as I can before beginning the process.
Just as a point of detail, I'm planning on pursuing an international adoption of a baby girl, either from China or Vietnam (depending on how the process goes when it reopens).
I wish you luck in your research and preparations.
Blessings,
Jennifer