Here are some Free high quality courses in Astronomy from the Open University

Astronomy with an online telescope

The Big Bang

Comparing Stars

Icy Bodies: Europa and elsewhere

In the night Sky: Orion

An Introduction to Exo Planets

The Moon

Moons of our Solar System

Motion Under Gravity

Partial Physics

Plate tectonics 

The restless universe

Seeing the light (This one is a little different it’s about how the Sun affects design)

The Sun

Telescopes and Spectrographs