Other useful resources
The NCBI BLAST web page
https://blast.ncbi.nlm.nih.gov/Blast.cgi
The latest BLAST+ release
ftp://ftp.ncbi.nlm.nih.gov/blast/executables/blast+/LATEST
Download pages for pre-formatted BLAST databases
ftp://ftp.ncbi.nlm.nih.gov/blast/db/
O'Reilly book on BLAST
http://www.oreilly.com/catalog/blast/