i think a part of the pleasure is to build it, am i right ?
That's what I thought and still think ;-)
Don't stick to my list too much, it's incomplete.
Just looking at the starter systems will get you an idea of what to get.
Starting something new is alwas fun. In my case it's not so new anymore
but the fun kept coming. Only your own experience will tell what is right.
Your system will change anyway as you go along and learn.
Just allow enough time to learn the modules you get,
because it's the player, not the gear.
Fun to you!
Somehow didn't think of this earlier. There is a guy with the handle
The Tuesday Night Machineswith who has a series of very useful videos on modular on youtube: