The Rosetta Project - Burushaski - Some basic information on the language, together with some sample texts. - http://www.rosettaproject.org/archive/bsk/
Burushaski: An Extraordinary Language in the Karakoram Mountains - Online version of a book containing fairly detailed grammatical notes on Burushaski, by Dick Grune (available in PostScript or PDF format). - http://www.few.vu.nl/~dick/Summaries/Languages/Burushaski.pdf
Burushaski - Sample and translation. - http://www.language-museum.com/b/burushaski.htm
Burushaski: A Language of Pakistan - Sociolinguistic and bibliographic information on Burushaski. - http://www.ethnologue.com/show_language.asp?code=BSK
The Burushaski Language - Short overview of where the language is spoken, followed by a sample text with translation into English. - http://www.worldlanguage.com/Languages/Burushaski.htm
Linguist List - Burushaski - Short bibliography on the Burushaski language, based on responses to a newsgroup request. - http://linguistlist.org/issues/5/5-221.html
Burushaski Bibliography - Bibliography of linguistics research on the Burushaski language. - http://www.southasiabibliography.de/Bibliography/Burushaski/burushaski.html