Through experience I have found fun and efficient ways to earn gold and great gear in Diablo 3 that I think you can benefit from. Keep in mind I am still learning (like everyone else) but I think I do alright by just doing what I consider to be fairly common sense things which include:
Have a Magic Find
Also keep in mind Magic find gets divided within a group in Diablo 3. Such as if you have a group of 4 players, and only you have a plus magic find of 50%, and everyone else has 0% find, then the total will be (50 divided by 4) 12.5% magic find for the group's loot.
Vendor vendor vendor
Most people know about this already,
but make sure you sell everything that you can in the
including anything with prime stats, vitality, all res,
magic find, +damage rings/neck +attack speed
rings/gloves etc. etc, a good combo of all the above
selling the quickest but you probably know that. Weapons
are the one thing that are considerably weaker so I
wouldn't even bother trying to farm sellable Act I
weapons but a lot of gear is still sellable at decent
prices for me (EU). I can't speak for the US AH not
having seen it.
On Sat I can
sell stuff 2-3 times quicker than week days meaning I
can have a lot more auctions sold throughout the day.
People tend to look for stuff with the longest time left
because they are used to the really good stuff going in
the first few minutes. There's a bit of a mentality of,
if it's been up for 10 hours, it's probably rubbish so I
won't bother looking.... so I find I sell a lot more on
Saturdays, don't know if that's just me or just the EU.
Always check the rings/necks on the vendor in a game. One game I found some 180 int, 90 vitality level 53 necks that I bought at 8k gold and flipped for 50k. Another time I found a 120 Dex 20% MF level 48 neck that again I bought at around 7k and flipped for 30k. Each time I bought 10 of each. Helps if you have a friend who can check the AH whilst you're in a game so you make sure you don't buy junk. 99% of the time it's junk. But if you get a good proc, get a friend to check the prices, and then go buy 10 or more and flip them. I'm amazed at the amount of people I speak to who don't even check because they say vendors only sell junk (never had a good piece of armor/weapons but I've had very good necks and decent rings too).
With the above, I can make anywhere between 200k - 400k
/ hour depending on how lucky I get, probably averaging
around the 250k mark.
For more in-depth tips and tricks on how to obtain better gear and gold in Diablo 3, I would definitely check out Diablo 3 Gold Secrets By Peng Joon, there's a small fee for it, but worth it.