Im not sure if this is the sticky you followed but I followed this when learning how to use my 996xt and its written for the 396xt. I found it very easy and straight forward.
"Programming your Uniden 396XT etc for Bell Fleetnet "
Once you follow this and program a site or few and a few groups and TGID's using the front display it really helps you visualize and understand what is required to get fleetnet programmed properly. It really cements the basic fundementals and after that everything is so easy to understand .
I dont have a premium subscription and quickly learned that to program the entire fleetnet(just zone 1) would wear my scanner knob/ buttons out as well as my hand.
So I downloaded Freescan which I highly recommend after programming a site or two in manually thru scanner. It is also very straight forwardly laid out and best of all its free. It really lays all the scanners options/settings out nicely so you can see everything it can do very easily without fumbiling though the menus.
you will be able figure it out and program a few sites again very quickly and will realize it is much easier and much much faster.
But still to program the entire fleetnet zone 1 all sites and TGID's took me along time to do in freescan manually inputting everything from this site since I dont have a premium subscription.
If you want I would be willing to send it to you. (took me alot of time). But it works flawlisly and I get lots of entertainment from it
Just Pm me or post here and Ill email it to you.
But if you really want to learn and understand everything your scanner has to offer i would follow my earlier advice.
Oh and another really aweome easier to read manual for 996xt is here
Easier to Read BCD996XT Digital Scanner Manual
I post this because I know the 996xt and 396xt are very very similar (mobile/base bieng the only or main difference I believe. But all the features/menus/options are exactly the same or very close I believe)