Your agile corporation from your Post-Fordist or, indeed your simulacra from your elbow?
If reality causes you confusion (but you’ve got a sneaking suspicion “The Truth” is out there, somewhere) then this free book chapter (taken from A2 Sociology for AQA), is probably just what you need to start bluffing your way through the highways and the byways of PoMo with the best of them.
In addition to outlining and explaining the key characteristics of Postmodernity (economic, political and cultural), it contrasts them with the key characteristics of Modernity.
Which means, in effect, you get two for the price of none.
Can’t say fairer than that.