Anyone who is preparing for their first serious fieldwork would do well to visit Claire Bowern’s fieldwork site: here. The site is mostly intended as a companion to her new book on linguistic fieldwork, but there is ample material on the site that is useful and/or of interest in its own right, including elicitation stimuli, lists of semantic domains, the odd article — like Himmelmann’s article distinguishing documentary and descriptive linguistics, suggested further reading, and numerous links to online resources. (Note that many of the most interesting things are accessed through the ‘Chapter’ link.)
I think people who are new to linguistic fieldwork will benefit the most from the site, but I suspect even old hands will find a few things of interest.