To add to all the other suggestions, I'd suggest this program as an ideal starting point for learning how to resistance train using barbells: https://www.barbellmedicine.com/blog/the-beginner-prescripti...

It's straighforward, manageable, and (importantly) it introduces the idea of autoregulation early on. Autoregulation is an important tool for helping to prevent injury due to innappropriate fatigue management. It also contains good information related to nutrition and how to perform the basic barbell movements.