Welcome to Librarium Online!
Atm we have quite a lot of junior members around the forum, including myself, and without having to dig through hundreds of old threads, i thought it would be good if we could get a small compilation, of any simple and effective eldar tactics you use, whether it is a grand strategy, or a little trick with one unit, it would be greatly appreciated.
Death to the Alien!
who likes cockroaches anyway.
Ordos Xenos 4/0/3
I'm not an Eldar player, but as a traveling mod familiar with this forum I'd direct you, and any other new Eldarlings to the stickied Index Page. There are a number of interesting guides there. I particularly recommend the "New Eldar Tactica." If your question has an answer, I'm sure it's there.
Good luck, and if you have a very specific question that a forum search or guide can't answer, just post it. After all, that's what the forums are for!