(This article was first published on World of R-Craft, and kindly contributed to R-bloggers)
A very nice resource which helped me a lot in kickstarting my Sweave efforts is Learning to Sweave in APA Style by clementi on scribd. This is a down to earth tutorial containing a lot of good tips! See for yourself:Learning to Sweave in APA Style
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Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).