Because we should not have to make new threads or post in draw threads with our fundamental exercises. Feel free to post even the smallest exercise you have done to show you are still trying, do not give up.

Before asking "what should I read/view/study/learn," consult this link:
http://irishopp.hubpages.com/hub/how-to-draw-learn

This thread's exercise will be perspective, again. This time, two-point. Reproduce the OP's picture or do your own perspective exercise.

Threadly reminder to avoid carpal tunnel:
http://www.healthline.com/health/carpal-tunnel-wrist-exercises