Hi Rwill
There is this Märklin book Article No. 03081 titled"Getting Started in Märklin Digital"
May be you can find it on ebay?
I use a CS2 and regarding the memory tab there is nothing so complicated
Here is the first screen in edit mode (the wrench is pressed):

In this case the itinerary B1 is selected with a name "B1 devia bus"
To the right you see the sequence of events which may be timers, a command or another itinerary.
Here is a way to edit those individual commands (you double click on one of them and can set the timing (waiting time)

On the screen above, below in the center you see what contact (event) will start the itinerary. Here contact 29: 2nd M88, contact 13
On the cell to the right, there is a loco approaching: this means that CLOSING the contact will trigger the itinerary.
The next cell right (Erw.) means the full triggering screen allows you to add a condition to the triggering. Here is the screen you get to when pressing "Erw"

In this screen the first line is to describe the TRIGGERING signal: the module#, the contact#, the triggering moment (here when occupied) and the group of sensors (here those connected to the main CS2)
The second and third lines are for OPTIONAL conditions (contact statuses) to be satisfied for the triggering to take place

Sorry my screen are in the German language
I hope this helps
cheers
Jean

I too am tempted purchasing a CS3 but it is not cheap and I suspect it will not bring me a lot more than the CS2 especially because I use Rocrail on a connected laptop. Better buy a nice loco.
Yes purchasing the books is nice but they get outdated almost when are released (writing design & printing take a year) when s/w updates are coming more than once per year (Not for the CS2 which Märklin tries to phase out).
So-I think- the way forward is to find by oneself and to check on forums. The forums I use are this one, 3 rails forum (French) and Stummi forum (German) and I get all the answers I need.
When you see 2nd hand CS2 prices you see they are pretty much appreciated even now.
I had even to repair it once (another time I sent it to Germany to be honest)



Cheers
Jean