I suggest that you start with what you agree on: Nightly Builds and Automated tests. Nightly builds is a no-brainer. For Automated tests I would start with:
- Each commit with new functionality should have at least one automated test
- Each commit that fixes a bug should have at least one automated test that fails without the fix and succeeds with the fix
If you do this, you will start to gain experience. With this experience it will be much easier to understand all the good advice that the literature has.
There is a lot of good books on good practises, but you have to figure out what works for your team.
