Liquibase has a lot of cool features that makes this tool very useful. One of my favorite is autorollback. I do not have to write rollback instructions for all changes sets to keep a possibility of reverting changes. Liquibase does it by itself for the majority of DDL statements. My video shows how it can be used, when it works and when it does not.
If you are missing more basic information about Liquibase, check my introduction to Liquibase article and video or other Liquibase articles.