Orange digital audio cable

Assembled new TV stand, managed to get new TV connected to DISH receiver. [After you read further you'll get what a huge accomplishment that was - for me. Then connected Panasonic Blu Ray DVD player: Panasonic HDMI to TV HDMI 2; DISH HDMI to TV HDMI 3 [DVD is on HDMI-2 but clicking input have to select DVD to view TV - oops - need to rename! ]
Adding SOUND BAR seems impossible; It has NO HDMI (in or out). Sound bar has (connections): marked AUX (1), white, red; marked DIGITAL (3), orange; marked OPTICAL 4; marked AUX (2), black, dig. opt.; marked USB (6), marked USB. Cables included with sound bar: [I think RCA audio] red, white on one end, single black on the other end; [I think dig. coax] orange connector on each end;; digital optical (TOSLINK) cable.
STILL not used on TV: Rear: Audio out, L (white), R (red); Audio out - optical; HDMI - ARC; SIDE: Component: R (red), L (white), Pr (red), Pb (blue), V (green) and HDMI and USB.
Still unused on DISH receiver: [For TV-1] Video Out L (yellow), R (white) and Audio R (red); with blue -Y, Green - Pb, Red - Pr; Audio Out - optical; Digital audio output.
Pretty obvious that I am NOT tech savvy. On a scale of 1-10, I'm probably in the minus range so, please, I'm a) desperate for feedback/assistance, but I need the crayon, a/b/c versions.
I've made multiple unsuccessful attempts to connect sound bar has been unsuccessful (altho' in the process I managed to have negative affect on other connections.) I JUST tried using TOSLINK between TV and DISH receiver - and for the first time, that paired the sound bar to the subwoofer but still no sound. (And yes, I did go in and modify audio settings - turned TV speakers off, changed to bitstream (dig. audio out); fixed (analog audio out). [MAJOR problems with remote, TV not responding to remote commands but I'll deal with that as well - IF I can get other things resolved.]
I DID go back to Sam's Club last nite, hoping to see how sound bars are connected to TV;s - they didn't have even one TV connected to a sound bar, and no surprise, no one knew anything except 'you just pretty hook them up and it works' followed by 'why did you buy a sound bar?'
Do I have to connect sound bar to TV AND Dish receiver? and not to DVD? Is some type of connector, adapter or splitter needed? (If so, depending on cost, would I be better off to forget about sound bar, or buy another level up (hopefully one that wouldn't require anything additional)? Or - can this just not be connected?? HOW to connect???
Note: I don't have TV-2 connected right now, there were weeks of problems for installer to get that right . Not something I can face right now - my focus needs to be getting NEW TV and sound bar connected and working properly - or returned while I can still return.