When I first started blogging I had no idea what other bloggers, publicists or authors expectations were of me. I am still somewhat confused but here is a document that summarises the thoughts of all these people in terms of Blog Etiquette. I contacted over forty authors and bloggers to get these suggestions and they are a great starting (or refresher) spot. A Guide to YA Blogging
Kristi from Story Siren has posted a number of helpful ideas on getting your head around YA review blogging - where to start and what to avoid.