How should I prepare for AIT as 35T and what should I expect while in ait at FT. Huachuca?

Keep an open mind, study hard, be a good team player.
We'll try to get you graduated on time if you do those things and pass the tests.

You will go over Algebra 2 as well as learn circuit theory (DC and AC). Ask questions when you are confused and work on reducing your anxiety during the many tests. Some subjects are easier than others so don't beat yourself up if you get overwhelmed - it will eventually make sense.

You learn things the Army way. Barney style, and firehose style.

You will be taught everything you need to know, but it will be a ton of information. There's no preparing, except for Security+.
Google CompTIA Security+. Prepare for that test.

It's a national certification that the DoD requires everyone to have, civilian and military alike to work on anything DoD related.