I've been out for a meal with family, I've had a small sherry or two, and there's no way on God's green earth that I am going to try to organise/catalogue/delete/understand those pictures.
I think a couple of them show the setup we have advised.
Do not, repeat not, repeat not bridge the amp.
There should be a switch somewhere on the back, set it to STEREO. Blimey, we've just got you two cables to allow this, and you bypass them with this switch.
HDMI is now the preferred method for monitors, I'll let someone else explain that, I can manage it usually, but more by good luck than intent. You need to set VDJ to VIDEO, there will be an option to activate the monitor, and extend the screen. That leaves you with controls on the laptop, and words on the monitor. Later releases of VDJ make this easier.
The purpose of the white knobs on the mixer is to balance individual channels. Leave the master alone, once you've got it somewhere in range. Julian and Gavin have both given you the way to do it.