Watch the Root 5 Minor & 7th Barre Chords online guitar lesson by TrueFire from Play Blues Guitar 2: Rhythm & Lead Fundamentals
These are the Root 5 minor and dominant 7th barre chords. You can also find these in a ton of songs and chord progressions, often along with the root 6 barre chords. Memorize the fingerings and practice slowly moving them to different places on the neck. You will find certain chords sound great together - use this to help you develop your ear as well.