Don't worry too much about organising appointments. That is someone else's job though it does pay to ask why you have been given the referrals you will receive.
If sounds like you may be a bit like myself and others on the site--tending towards liking control. I think that is a good thing, but get ready for a heap of incoming information.
You can, and should, request copies of all your test reports. Buy a decent concertina folder and put everything in it. Everybody's names, business cards etc. It may seem at the moment that everything is permanently seared into your consciousness, but two years down the track you will forget dates and details.
It's early days, try for the old 'alert but not alarmed' mantra until you figure out what is going on. You have a whole new language to learn. It takes time. Mxx