While I'm still new to drawing, I have found this really helpful for me as I have been learning and I hope it can help out any fellow travelers who are just starting out like me.
Gesture drawing sites:
r/SketchDaily gesture drawing tool
Pixel Loveley
Quick Poses
SenshiSketch
Videos explaining gesture drawing and its traditional uses:
Why Bother Gesture Drawing?
Quick Pose Gesture Sketches
Film Studies: Gesture
Why I do gesture drawings every day, and will continue to do so for the rest of my life:
When it comes right down to it, generally speaking, drawing is not something people get better at by reading books or watching videos.