This is not a usual complete guide,since its the first time I'm making one,I ust wanted to give it a shot.

First thing you need to understand Lulu is not a good support like soraka or taric,but she belong to any other role except support and jungle.I've test many different build and this one is the best in my opinion,I've had success with it in mid against almost all the main mid champions,for top she is still decent but not as strong as in mid,I've got success against Riven and Irelia.

Most of the players only see her as a support but lets all show them,little note {she is a awesome counter pick to mid kennen}