@jb61264 - if you right click on the rack in this thread you can open the link as another tab and then get infomatics and click through to read what every module does (how do you think we manage to give rack advice - there are over 7k eurorack modules!!)
but in broad strokes (the rack seems to me to be)
the top 2 rows are mostly vcos, modulation and effects (plus grids - which is a trigger sequencer)
the middle row is more utilities and effects = plus vc-t-networks which is 4 percussion voices (or you can use it as filters) and a basic vco
bottom row is mostly things that you'd want in easiest reach - control modules, favourite filter, voice etc
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities