See also Team Foundation Build on MSDN
Build your Visual Studio projects
Define the build process
Build your code automatically every time you check it in to catch problems early.
Create the build definition.
Select the continuous integration (CI) trigger and specify the code you want to build
Save the definition.
Queue your new definition to make sure it works.
You've created your first Visual Studio build in the cloud! Since this is a CI build, a build is started every time you push a commit to one of the branches specified on the Triggers tab.
Try this next
Create a backlog to plan, organize, and track your work.
Add users and their licenses to your Visual Studio Team Services account.