Right now I typically Ctrl+0 my starting building and then repeat this for squads. Are there any good Shortcuts/hotkeys I should be aware of? Thanks!
Well you can use CTRL+click to select all units of that type (if you click on the bottom portraits)
CTRL+Shift+click to add another group to your currently selected squad(s).
CTRL+A - select everything on screen.
, to cycle builders saves control grouping them