I'm BaLLducked. A filthy casual who genuinely likes playing Blitzcrank. Blitz's early game is strong by securing a early kill with his q, and getting the adc/carry snowballing. If my adc proves to be rather incompetent I look to roam up and look to help secure objectives and or kills on the map. And prove quite useful late as he can just grab someone before a fight securing a free kill for the team, and turning a fight into his team's favor, but not as much as leona who by late is full tank. As of right now he's in a kind of of limbo where the other tank/utility supports easily out perform him, and the enchanters wipe the floor with him. Although his wr isn't awful. If you want an easy champ to play, to climb, or learn I suggest playing either leona, lulu, or nautilus. They all do great things for the team and almost always have a significant impact. A losing blitz is also almost always useless. Next up his abilities.

Unlike the last 15 champions all of his abilities fit only a single page.

Passive: While low health blitz gets a shield = to a portion of his mana.
Q: is his most powerful ability that allows him to snag a enemy champion or jungle camp for his team. Always max this first.
W: is for closing a gab between him and the target he wants to q.
E: is a knock-up that can be cast before the q pulls them in to automatically knock them up before they can do anything.
R: is a AOE silence that does magic damage that I believe is the only magic damage source that shreds shields. Very good against a team with a bruiser going sterik's.
R Passive: After a second or so of aa a target they are struck by lightning for a portion of his ap. Great for stealing adc's kills/cs.