#reset 2018

I'm slowly but surely growing past the beginner yoga phase in terms of my flexibility and strength, so I'm looking for youtube or tumblr resources to help me learn intermediate poses.

I need to learn new things that challenge me and also prepare me for more advanced yoga down the road. Ideally, I'd like to find a resource that explains good posture and alignment along with a full workout rather than just still images of a pose.

I know this is a lot to ask for, but if anyone knows of a resource I feel like I'll find it on the internet first.