Hopefully my comments aren't too stoopid. I'm new to the Pi but not to computers. As a pi-noob there seems to be a few options for the display, HDMI, plug-on small LCD display and the A/V connector. What's a little confusing is what data they send out as in, are they just different ways of displaying the same data? So if I go round the options, HDMI will show the same screen data as the plug-on LCD as the A/V? Or are they three different screens as if they're on their own port address so each can be configured to show different data?
I appreciate the screen resolutions will change, for example my HDMI res is 1600x something, but if I put on a 480x380 LCD I then do I have to switch exclusivly to that display? (switching off the HDMI) What's the A/V resolution, or does that depend upon the type of TV it connects with.
And then I notice the "Raspberry Pi Touch Display" and that tiny "display" connector on the edge of the B3+ so there's another option, perhaps. A bit confusing.