In object-oriented programming circles it’s almost impossible to escape Martin/Feathers/Meyer's SOLID principles. I have some opinions on the matter which I'll share with you as well.

Almost there - just need you to log in real quick!

You're not logged in at the moment and the course you're trying to access is for logged in people. If you don't own the course - just head over to our courses page and we'll get you squared away!