In early game aatrox is a little bit weak compents at the enemie hes fighting again. I found my selve failing very often in early game so play a little passive and wait for your jungle to gank or till the enemie makes a big mistake.
U wanna stack ur w 2 times and keep it there .. than q on the enemie and switch ur w to dmg so u can hit him with a big strike in his stomage, do this all time and heal up afterwards so he will get lower and lower till u can finish him of with ur ult or with the jungler.

In team fight the only thing u wanna do is q in use ur ult and fkin destroy every one and every thing thats all. Try to hit the carrys with ur q and then e them before using ur ult and just autoattacking all to death.

Heavy enemies r ranged enemies with huge poke. U cant trade autoattacks with the cuz they will normaly always win. Just play passive and wait for ganks.

Weal enemies r the melee enemies. If u trate autoattacks with them u will always win cuz u can just heal up afterwards and they have nearly no chance and will die so often or just back and get no exp or cs.

Q = The q can be interrupted by nockups nockbacks or other cc, the only thing which cant interrupt it is a stun becaus eu will be stunned at place u q´ed at. It also costs 10% health so be carefull with it.
W = ur w is in normal form just the biggest sustain u can every get. U heal up twice so fast if u r under 50% of ur HP. The damage form is super strong but will cost u a bit of health like ur q and e but deals heavy damage, use it if u r ahead or if u have some lifesteal like a bork.
E = ur e is a poke/slow/damage skill. I dosent deals the most damage but it slows realy good (40%) and the poke is also nice cuz u can cast it very often. Keep in mind that it costs 5% of ur current Health.
R = ur ultimate skill is buff/damage skill, it will hurt all enemies in range for magical damage ( skales with 1:1 Ap ) and u will get bigger and get a higher range/attackspeed. This skill dosent costs health.
Passive = ur passive is like the zac or anivia passive with a little buff. If u cast speels that costs health if will stack up higher and higher. The higher it gets the more attackspeed u`ll get and the more life u`ll restore if u die cuz if u die u will get invincible for a couple of secs and restore some health, while this happens u cant move.