Anyone know how much logic I should know before reading pic related?

Start with the Philosophical Investigations first. Use Baker & Hacker's commentary. Go back and read the Tractatus later, once you have a solid understanding of the PI and some secondary literature on Wittgenstein. It's nearly impossible to interpret in any meaningful way except in the context of a wider view of his career and intellectual development.

You don't need much or any logic at all to go from the PI or even to read the Tractatus later. No need to learn formal logic for it. Or at all, really.

>>9102923
>>9102932

first order logic helps.

>>9102923
You don't *need* to know any logic prior, in the sense that you can understand it without prior research. It's not that hard to understand. That being said, some Frege might help.

>>9102958
Is this true, though? Just flipping through it I can see a lot of logical symbols and stuff that I probably don't understand.

http://pastebin.com/9pUqMKnk