Everything banana said is spot on! The Airplane Flying Handbook and Pilots Handbook of Aeronautical Knowledge are available for free on faa.gov. i would recommend reading as much as you can absorb. It's gonna seem foreign and confusing at first but the more you keep studying and practicing the more familiar you will become. Practice on the ground and perfect in the air.

Best of luck to you! It is definitely a great time to become a pilot and hopefully stays that way. If you have any questions feel free to pm me and make sure to keep us updated on your journey! Also, thank you for your service!