Business plan useful links

Business plan writing tips

http://www.planware.org/businessplan.htm
http://www.bplans.com/dp/
http://sbinformation.about.com/od/bizplansamples/Business_Plan_Samples.htm
http://www.entrepreneur.com/businessplan/index.html
http://www.myownbusiness.org/s2/
http://www.soyouwanna.com/SITE/syws/bizplan/bizplan.html
http://www.score.org/
http://www.sba.gov/smallbusinessplanner/plan/writeabusinessplan/index.html
http://www.busplan.cc/english/eng_start/index.htm
http://www.quickmba.com/entre/bplan/

http://cbdd.wsu.edu/kewlcontent/cdoutput/TOM505/page25.htm
How to do research for a business plan
http://www.smallbusinessplanguide.com/web/index.php?page=gettingStarted

NAICS code info

http://www.mlb.ilstu.edu/ressubj/subject/business/siccode.htm
http://www.census.gov/epcd/www/drnaics.htm
http://www.census.gov/epcd/www/naicsusr.html
http://www.census.gov/eos/www/naics/htmls/4/454111.htm
http://www.census.gov/epcd/www/naics.html

Business Ratios

http://www.mlb.ilstu.edu/ressubj/subject/business/ratio.htm
http://www.bankrate.com/brm/news/biz/bizcalcs/ratiocalcs.asp

Commercial softwares

http://www.jian.com/software/business-plan/sample-small-business-plan.html