This app was mentioned in 3 comments, with an average of 1.00 upvote
Late to the party OP but what I would suggest is getting the Army Study Guide App.
It has your soldiers creed, warrior ethos, general orders, APFT calculator, etc. Everything you will need to learn ahead of time and in a clean format.
For me, when memorizing the soldiers creed, I just went one line at a time and then added the next one once I felt comfortable with the previous.
Do pushups, situps, and runs. Get in the best shape you can be before you ship. It'll make things a bit easier in that regard.
I'd advise also checking out this Army Study Guide App, and get familiar with:
customs and courtesies
soldiers creed
warrior ethos
ranks
D&C (Drill and Ceremony)
If you are in the Army or thinking of joining:
https://play.google.com/store/apps/details?id=com.marlon0008.armyguide
It needs updating though.