Here's the Bestop picture and then I'll explain most main parts
Replacement Tops Wrangler TJ Jeep Soft Tops
The link gives you a full rundown, but basically here's what you need hardware wise
You need the main bow (#7) that has the front locking channel (#6) screwed to the front of the soft top cover itself (#1). There's the door surrounds (#5) that block out the elements and give a seal to your soft top. There's the rear window attachment that sit on the back corners and hold the rear window down (#24). There's the rear middle bar that holds the rear window down (#25). The plastic plugs that hold the frame to the Jeep bar-sides (#22).
It sounds like a lot, but some of these things already are on the Jeep.
Unfortunately, I don't an assembly video, but I just had to figure everything out the last week and here's my suggest. Take the soft top off of the frame hardware. It makes the installation that much simpler.
Look at your Wrangler first. See if you have #24 already bolted to the back of your Jeep on the corners. Then see if you have #25 included (may be attached to the soft top). It just gets shoved into the rear behind the tailgate to create a level surface across the rear body.
Then look at the plastic clips #22 that should be similar to the following picture (black plastic though)
The frame essentially sits over top those plastic pieces (which may actually already be on the frame rather then the Jeep's sports bar).
The frame just pops over top those clips, attached to the sports bars on the side, and then just latch the locking front bar to the windshield just to test fit. Then put the door surround in place. There's a notch on the top of the rear quarter panel. Then those screw gears just go through a whole in the sports bar. Make sure the fit is perfect so your doors shut properly.
Have a friend help you toss the soft top (without SIDE windows, but WITH the rear window) over top the frame. Screw the soft top overtop the locking front brace (windshield part). Then look above the rear seats (underside soft top) and you'll see where the snaps need to go around the frame bar. Then the rear window piece essentially just slides into the back braces and bars (#24 and #25) and your pretty much set to go. It takes some fiddling, some time, and about four beers. Mine has actually never been on (and I'm looking to sell it) because it's been such a pain in the ass. But you may have some better luck.
Remember, cleaning the soft top NEVER USE CHEMICALS OR A ROUGH CLOTH. you'll scratch 'em.