Micro

I am relatively new to fishing rivers and a major reason for following this board is to learn about different techniques. I've been using floats with jigs or corkies but am not locked in on any particular method. What type of jigs do you use and do you have favorite colors or sizes. How do you fish them, casting up river, straight across or quartering downstream? What species do jigs work best on?
Thanks for any info.
Deepwater