We have converted 2 presentations from VSDOpen, into a book, which will act as guide to understand/learn a simple and standard flow for RTL2GDS using opensource qflow

https://www.vlsisystemdesign.com/wp-content/uploads/2018/12/PD_Qflow_Book.pdf

This book covers 2 examples and its detailed process to implement a small design right from synthesis to placement to layout to STA, all using opensource flow.

Have a look. Download, read and enjoy....

All the best and happy learning.....