Looking for help in improving jungle and ganks

[quote=ClujDevil]I am a fresh level 30 account, 21 champions owned and pretty much always play support or tank. I know the basics of jungling, but, as the title says, when it comes to being an effective jungler, i fall way behind others, or i blow my ganks. I currently own: Alistar, Amumu, Anivia, Cho'Gath, Karma, Kayle, Maokai, Nunu, Poppy, Rammus, Shen, Singed, Sion, Sivir, Soraka, Taric, Tristana, Trundle, Udyr, Urgot and Vladimir. Many of them could jungle, and I'd like to learn a few. Playing on EU-W, IGN: ClujDeviI (that is double "i" at the end) P.S:I can't zone very well in my lanes, so a little help with that would be much apreciated.[/quote]