Reference the Hive Power, that is what your Resource Credits are based on right now, and what is used to interact with the block chain. The more HP you have the more you can do, up to a point. Once you have about 80 HP, that is enough to do almost everything a person wants with out running out of resource credits.
There is a lot more to it than that, such as how it effects your personal vote power, (ability to reward post), how much you earn as a curation reward, and a few other things.
Oh and all the pictures are taken on the Kenai Peninsula, Alaska. The little bird and the moose and calf are in my yard.