Hi there,
yes, i mentioned those above but have left them out for this section as they are a little more complex in their fields and for the newbie to organise, the set ups mentioned above are more about expanding the horizontal stereo field for instruments in a recording. The Mid-side and Blumline are based on a central axis point capturing a broader polarity range field from a central point. But yep they are both good to use as well. I will cover those in a later lesson when i get into mixing.
cheers.