Technical Practices - What are they useful for? How to learn them?

It has become obvious in the latest years that agile development is not possible without a good set of technical practices. But what are they and what are they useful for? And how can you learn them?

Let's discuss these topics with Alex Bolboaca. Prepare your questions about technical practices such as: code standards, code review, unit testing, integration testing, acceptance testing, test driven development, pair programming, acceptance test driven development, refactoring, continuous integration, continuous delivery and others. Since the topic is extensive, we will only discuss a subset of the practices based on your interest.