Hi there, im quite new to all of this, but i found this guy who has soem interesting info regarding grouding/coupling in designs. Because you said any help is appreciated, maybe it helps you. Basically his [4 part yt lecture is a teaser](; www.youtube.com/watch?v=vumYrebIXm0) to his free 9 part minicourse. His free minicourse is “Module 1” of his full course.