taultunleashed

Get a waypoint in Act4 Inferno. Do this by the following exploit:
1. Go into Hell difficulty "Prime Evil".
2. Leave 3. Join Public Game Prime Evil 4. Leave 5. Resume game, you now have Prime Evil Inferno waypoint.

Farming the aspects (they don't even defend themselves if you are ranged, just take maximum MF-gear):
1. Take waypoint to Crystal Collonade
2. Walk a few steps north-west and enter that dungeon (ignore all enemies)
3. Walk to the end of that thing (ignore all enemies)
4. Use the teleporter thingy there
5. If you see Magdha, talk to her, stand behind Tyrael and shoot her, she can only hit Tyrael who is immune.
6. If you see Zoltun Kulle, talk to him and go to enough range that he doesn't attack you when he is morphing into a demon. Shoot him from outside your screen. He won't attack you, and make a noise when he dies.
7. If you see Mira, don't attack her, she fights you.
8. Portal home, leave game, rinse and repeat.

(If you still do enough damage in MF-gear, you can also use a later waypoint where you don't have Tyrael and you fight different Aspects (Cain, Rumsfeld), but you don't have to walk nearly as much.)

They drop 2 level 60 blue items each time, rarely anything better. Blue items usually suck, but you find the occasional 1k 1h or something similar. Farming Act3 can be more efficient but you need incredible gear to do that reliably and quickly.
Farming the aspects requires absolutely no gear, a level 1 character could do that.

It is way better than farming Act 1. To get ready for Act 2, you basically need Act 4 equipment anyways.