What type of ropes are used at Air Assault school? And also any tips for success?

I concur with what everyone else states, prepare yourself for day 0 and for that last grueling roadmarch what was it 12 miles? They don't let you use your frame, I was literally bleeding from the wells that my ruck caused but it was worth it. Good luck! If you plan on going to rappelmaster afterwards there you get to do all the knots, only one I remember is the anchor line bowline

Do you mean to tie your swiss seat? It is a standard rope, approx 3/4" thick (maybe someone from TSAAS is on here and can give exact width). If looking for a rope to practice with, don't worry about composition, worry about thickness. Anything between 1/2" and 1" will be fine for practice. Plus you will have lots of time to practice while in AAS (during the day, and at night when you go home).

If you mean for rapelling, you don't have to tie that, just hook in and slide down.

If you mean for securing loads, you don't actually do that - you just inspect the loads they have prepared.

Preparing to tie a swiss seat is great. But even better preparation is making sure you are physically fit. The 12-mile ruck march is not THAT difficult - but it always gets a few. Especially in the dead of summer. I never run on my ruck marches, but I usually have no problem rucking a 15 minute pace. I BARELY made it through my 12-mile just because it was SO hot and humid (2:59:13). IIRC, the obstacle course to even get in to AAS is actually what cuts most people. Make sure you can climb a rope AFTER a strenuous PT session, and you should be OK.

I didn’t practice anything. Just go there and be ready to learn the right way. Only thing you should focus on is familiarizing yourself with the Airassault handbook. Start looking at sling load ops if anything, my class lost 44 people during slingload ops.

The rest you will learn. Hope your ready for a smoke fest everyday. It’s good fun if your in shape.