Is this "mahou shoujo lyrical nanoha" a yuri series? Just curious because there seems to be a lot of yuri art for it, but the wikipedia page doesn't say it is...
Do yourself a favor and only watch the original series and A's. StrikerS is where all the Yuri stuff comes in. And no, its not a yuri series, its just Fanon. Thats like asking if Touhou is a Yuri series. Its just Fanon. But IMO, StrikerS went overboard with the Yuri stuff.
Everything Nanoha is about is loli befriending through h-bombs and stuff. Seriously, the more she wants to be friends with you, the harder she nukes the shit out of you. No wonder she's called "the White devil". It kinda works like Touhou danmaku battles - it looks like the end of the world, but everything the loser gets are torn and burnt clothes, exhaustion, few bruises and some scratches. Oh, and in the end they all drink tea together.