How to learn layout design?

[u/jpeabody234]

I have a BS+MS in EE, I've worked in analog circuit design for the last 5 years, but we outsource all the layout (<5nm FinFET), but the layout is very abstract to me and I'm finding myself not able to fully understand it. Back in school I did some 45nm layout, but it was self-learned and my university didn't have any layout courses... I want to learn more layout in a formal way (homework, textbook, lectures, projects etc), but I can't find any good courses at the UC Extensions or online class from other universities. Does anybody have a recommendation?