1. Make sure you know what to farm. This means that you should know what you have the ability to farm and what sells well on your server.
    
2. Where to farm for specific items that are worth a lot of gold each. If you aren't sure about something, Thottbot it.
    
3. Make sure that you are prepared to stay a while in one area and that you have enough food and water to keep up. Keeping focused while you are farming for a particular item will ensure that you get it when it drops. If you can stay focused, you will make more money.
    

“Playing” the AH

The idea behind playing the AH is to buy low and sell high. Instead of spending an hour or more on dailies or farming, you can spend an hour or so combing through the AH for things that are on there way cheap that you can buy and then sell higher. But, you need to have a good, updated addon and a feel for what sells and what doesn't on your server. You will also need to look through the AH every day to know what things are going for. Here are some universal tips that every player should go by:

1. Don't waste your time with buying something that will only sell for a gold more than it's listed. This will cut your profit way back and waste your time.
    
2. Always check the prices on primals, shards, void crystals, gems, and so on to make sure that you are familiar with the prices. These always sell well when you can buy them cheap enough.
    
3. Keep an eye on prices on blues and epics, Darkmoon Faire cards, and other special items. You can usually make a good profit on these things when someone really underprices them.