do a search on nolvadex or clomid. gyno is only one thing that Anti-E's do for you. Also, Clomid is for PCT. What that means is that during your cycle your system will stop producing testosterone because it senses that it has enough. After you end your cycle, Clomid will jump start your system into producing testosterone again.
Nolvadex and Arimidex are the one's that prevent gyno. You take them during your cycle. They also do other good things for you, like minimizing water retention and making you look harder and keep a higher percentage of your gains.
But all this stuff is on the site and in considerably more detail than my little half-assed attempt at explaining them. Do searches, read, read, read. Nolvadex, Arimidex and Clomid will improve your overall experience not diminish it. They are just as important as the other stuff, don't overlook them. They will make your cycle better, not worse.