This article by Simon Galbraith (from Red Gate software, maker of SQL Compare) discusses migrating changes from development to staging, QA, and on to production. If you've never seen the need for a schema compare tool (Steve Jones!), this is worth reading.
Do you know the difference between a login and a user? What's the best way to add them; Enterprise Manager, T-SQL, or SQL-DMO? In this beginner level article Andy demonstrates how to use all three methods to add logins and users and offers his view of which is the best technique.
Do you get tired of reviewing each SQL Agent notifications nightly to determine which SQL Agent jobs failed? Is there a significant number of SQL Agent job notifications that it takes a while to review each? Here is an alternative that allows you to have a single email report of all job failures.