Pragmatics and Discourse, 2 nd edition : Key features of the new edition include : two new strands on Corpora & Communities and Culture & Language Learning; the merging of two strands on Context and Co-text; new material from speaker-based cognitive linguistics; updated references; and fresh examples and exercises. Written by an experienced teacher and author, this accessible textbook is an essential resource for all students of English language and linguistics.
It's a very good basic book for anyone who wants to learn more about pragmatics and discourse. I myself am not reading the whole book, just the parts to do with politeness for my thesis, but it's really helpful.