Here are some tricks to use to get \"good\" items meaning more Rare, Set and Unique Items. You can trade the good items you find that are not useful to yourself for other items that you can use.
1.Get lots of Magic Find.
2.Open up all Chests, Rocks, Barrels, etc.. Chests and other similar items have increased chances for drops. Combined with a good Magic Find % you can have a pretty good chance of getting a good item from a chest. There are also certain areas where chests are more common. Carry keys (except Assassins) so that you can open locked chests as well. You can carry some keys in your Horadric Cube.
3.Repeatedly Kill Champion and Unique Monsters. Always kill these (if possible). They have a much better chance for good drops. You can even go to areas where they are more common or where they are easier to kill.
4.Kill more Monsters. Generally the more monsters you kill within a general amount of time, the more drops you get and the more chances you have to get something good. This is why areas like the Flayer Jungle are popular. You may wish to find areas where you can kill a lot of monsters at once.
5.Activate Monster Shrines or Evil Urns. This will create Unique Monsters or Champions that you can kill for better loot.
