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.