Macross Sequels are sequels to the Original Series Macross, and don't really have anything to do with Robotech.

Macross: Do You Remember Love: Sometimes referred to as a movie within the Macross Timeline. It recounts the events of the Macross series in a feature length film.

Macross Flash Back 2012: A half-hour compilation of Music Videos. It's kind of fun to see Lisa taking off from Earth in command of the Megaroad.

Macross II: Often referred to as a sequel to Do You Remember Love, although I've heard varied opinions on this. Regardless, it doesn't seem to be part of the official Macross timeline.

Macross Plus: Involves the testing of prototype Valkyries. There is also a sentient Artificial Intelligence / Idol Singer (like Minmay).

Macross 7: I have not seen this, and don't have a lot of information. I do know that Max and Miriya are in it. Also, it involves an outer space rock band.