Templates/Learn to Build Complex Valuation Models for Public Companies

Where can I learn to build complex valuation models for public companies? When I say complex I'm not necessarily referring to outrageous formulas for the purpose of creating outrageous formulas. I want to learn how to build a very thorough model with schedules that capture everything. I did the WSO prep which does the job but I'm looking to extend my level of capabilities. For example, think of an extremely complex company that you have to model out, WSO prep knowledge is not going to satisfy the job.

Any recommendations? Can anyone share any complex models they've done? Template with irrelevant numbers?

Thanks a lot.