In reference to video number 3 "Filling in the Outline" - Refer to my linked video for the issue im experiencing. https://youtu.be/J0_7H3DMeAI?si=lkDPXfZyBy-hzPaR
Hey Michael @Blender Mike ,
You are trying to connect two Objects together in Edit Mode and that is not possible (in Blender):
First combine them into one Object; in Object Mode, Select all those separate Objects and then CTRL+J to make them into a single Object. Then switch to Edit Mode and try again.
Thank you so much. - Ctrl-J - then everything worked a treat.