I'm a bit confused : is Žižek a meme or is he actually worth reading ? Where should I start ?
He is not worth reading. He is funny, but lacks any real substance. He boils down to "Well not wanting to submit to an ideology is an ideology so you may as well eat McDoubles all day". He is a accelerationist but with less motivation.
He's great but good luck reading him without some knowledge of Hegel and Lacan. If you are serious about getting into that kind of philosophy just read some basic Hegel, Marx, and Lacan and then pick up some Zizek. Some biblical knowledge helps too. It will be a lot of reading but definitely not a waste of time, that's a whole range of insights.
The meme is that Zizek is a hack, by the way. Mostly spread by people who can't stand that he's an entertaining guy with a following, or vehement anti-marxists in general.
I read The Fragile Absolute, and even liked it for a bit. I also liked Lacan at one point until I realized that desire is not based on lack and then his whole philosophy fell apart--that is, what philosophy there was, for the most part it was padding. Freud is still useful without him or Zizek. Butler managed to extract something useful from Lacan, but only through admirable will. Lacanian thinking is by-and-large useless.
Bit of a weird request here, but could you give a very simple summation of Lacanian thinking? I don't study philosophy, but I'm incredibly insane and last night I hallucinated myself saying "Lacan, Lacan, Lacan" over and over again while I was lying in bed. I feel like I should look into it or something.