ze Hand rig
This Hand rig uses Blender RIGIFY rigging system, so if you are familiar with rigify rig.
..The rig has IK/FK switch on fingers for total control. This rig will be useful to you for Animation practices and creating demo reel. Also rig GUI is easy to control for those who haven't used rigify rigs before.
Keep Animating.
You can Purchase the Rig on Artstation:
https://www.artstation.com/a/29939267