score.org
score.org/westchester
SCORE (Service Core of Retired Executives) will match you with a mentor to assist in starting, growing, or transitioning a business. See their web site to be matched, to view live and recorded webinars, take online courses, or use a resource such as the The Startup Roadmap: Your Guide to Successfully Starting a Business.
SCORE Westchester will match you with an experienced local business executive who has volunteered time to mentor those seeking to launch a startup and or retool an existing businesses.