Macross TV: http://www.animefiends.org/files/%5BaF%5D_Macross_TV.eps1-36_DVDrip.torrent
Macross Do You Remember Love Movie: http://tracker.anirena.com/download2.php?id=3772
Macross Plus: http://kaa.animeconnection.net/torrentpage/torrents/%5BKAA%5D_Macross_Plus_01-04.DVD(Complete).torre
Macross Zero: http://a.scarywater.net/aone/%5BAonE%5D_Macross_Zero_01_05.torrent
The original TV series is awesome, the movie is an alternate version but definitely a must see, it skips over lots of stuff but the animation is amazing and it does improve on some other stuff a lot.
Macross Plus is definitely the best thing to come from the Macross universe, it's one of the best animated OVAs ever, with impressive dogfights and quite a good story. Macross Zero is done by the same team which is on Frontier now (Satelight) and it's good quite awesome animation, even the CG bits are good, the story does lack in some parts but definitely worthwile.
Skip Macross II and all Macross 7 stuff though, there are people who like those but they're really nowhere like the other Macross stuff and thus should be skipped unless you're a Macross freak and want to see it all.