lol
i just finished watching both the vids and they are very good, cleared up a lot of things for me (like channel information in file formats)
but i noticed u had a lil trouble with photoshop changing the colour of ur layer, u prolly figured out why by now, but for everyone else that doesnt know:
u were sliding the lil slidey thing in the colour picker, that doesnt change the colour of ur image/layer, it just simply allows u to select a colour
to change ur image colour, go to image>adjustments>hue/saturation
that changes the hue/saturation of the entire image
or to change it for just one layer, go to ur layer control box, add a new adjustment layer, and click hue/saturation as the adjustment layer

hope it clears some things up
loved the vids btw