How to take a good digital photo

[BillyZ]

I've tried and tried with my digital camera, I've played with setting after setting, adjusting exposure time, flash/no flash, spot focus and I just can't find the right settings to give me a good picture. It's seems like the toughest part to get is the focus and exposure.

Could someone share their techniques for taking good photos of their tanks/fish with a digital camera? Especialy good Macro shots as I love all the tiny little things but they are the hardest to get a shot of.

Thanks all!!