There is a lot a good documentation on how to start with DX. After starting though, you may have some unanswered questions: What should I do with Profiles ? How can I deploy metadata that includes usernames ? What should I do with this push error that I’m not getting on Sandbox ? These are just a subset of questions that may arise when going deeper in DX. Come and see what we’ve learned in 2 years using Salesforce DX, the issues we’ve encountered and how we solve them.