Get a library glued to your workspace
There is a plethora of libraries in Illustrator. And a lot of them contains really cool options and add ons regarding colours and brushes and many more. It can be rather cumbersome affair to dig stuff up to figure out what you miss. But there is a fast way of using the libraries. When you got an open library you can pass on to the next by clicking on the magical arrows in the bottom of the panel.
Glued libraries tip:
So, so might suddenly browse by a library that have caught your unconditioned love. You want it to stay with you. Then you hit the minimenu and make it persistent. Then it will hang out in your workspace next time you open lovely Illustrator.