Hi, Kat, and welcome!!
I love your enthusiasm!! Being a willing participant after your decision was made is so important to your journey!!!
Your questions are understandable, but not easy to answer!
The psych test is not a big deal. Just answer the multiple choice questions honestly, all the while thinking that you need to give the psychologist the infrmation he/she wants to see!

Basically, the purpose is to make sure you are not so depressed that you can't function well enough to embrace this life-changing part of your life.
As to the tests/things you can do, you can't do anything prior to your surgeon's consult. He/she will ask you questions, and based on your answers he/she will order a regimen of tests for pre-op. Insurance approval is necessary also.
In the meantime, my suggestion is that you purchase "Weight Loss Surgery for Dummies," (available inexpensively on amazon.com). You will find it an easy read, and it takes you through the various stages of this journey.
My own spin on this whole process is that it is a journey, not a destination. It changed my life for the MUCH better, and I am much happier. Everyone has problems to deal with - that's just how life is. However, I approach them differently, with more confidence. As I said, this surgery changes one's life. Embrace it, take it all in, follow directions from your surgeon to the letter. It isn't easy, and it is so worth it.
And the very best of luck to you!
