Greetings, i'm Sherigala. This is my first guide ever, and i'm doing it on Aurelion Sol of all people, and in the least likely place, the jungle. I play on eune and i'm having a ton of fun playing him, despite his squishiness....so let's get started.

Pros:
Insane burst if aimed right.
FUS RO DAH!
passive is a hard hitting built in waveclear.
Aoe stun
High mobility and great splitpush

Cons:
If initiated with comet, no escapes (only flash)
Squishy
If you mess up the passive, he's very low on damage.
Hard cc can shut you down
Needs tactical thinking, rather than brute force.

Max ultimate out asap (for obvious reasons), then Q,E,W. You need to gank from afar or splitpush, you will need that comet to clear huge creep waves.

Start at gromp, then go to wolves (if you have good runes you can try blue, but you're very squishy early game, so only do it if you can kite well), birds/raptors whatever you call them and then golems. If top crab is available take it, then back for jungle item.
Second rou d, take all 3 camps, crab if available, then all 3 top camps and if you came out with enough hp left, you can take a look at toplane for gank. If you follow this strategy, i call this 6in6 with only a little bit off you can be level 6 under 6 minutes, meaning you can do a pretty potent gank, possibly pick up a kill very early in the game.

Always start with building up your q from afar, while trying to stay with it on the ground, we will need to have the comet if we need to escape or splitpush. However if you want to get back in a fight quickly, the fire q and fly away with it. Someone low on hp? Time for the dragon shout sniper skills to shine, that ult almost does as much damage as a lux ult, with a pretty long range too so use it like a high damage burst.

Aurelion Sol can be a gamechanger if played right. Keep practicing and if you get his stuffs correctly, you will be kiling in teamfight botlane, then a second later hard pushing toplane and winning the game in no time.
Have fun ^^