I found this tutorial on character rigging. It shows how to set up a basic character rig using IK, FK, Grab Icons and Blendshapes.

https://en.9jcg.com/comm_pages/blog_content-art-11.htm

It was a valuable asset to me when I was first learning how to rig my characters. The tutorial is very easy to follow.
The tutorial was made in maya 4.5 but the principles remain the same.