Most of that I am pretty automatic on. But one thing that I notice when I'm coding is that I don't really know many commands to make it easier to handle everyth

Most of that I am pretty automatic on. But one thing that I notice when I'm coding is that I don't really know many commands to make it easier to handle everything in between two brackets or parenthesis or what have you. Sure, there is the '%' key. But are there other useful commands as far as that goes?