CAMPBELL, Calif.--(BUSINESS WIRE)--Rainmaker Systems, Inc. (OTCQB:RMKR), a leading provider of external, for-profit based learning management solutions, announced today that it will host a webinar “How to Choose the Right LMS” on Thursday, March 19th at 11am PT/2pm ET. Training and learning management executives know that whether you’re choosing your first learning management system (LMS) or replacing an existing one, you must build a solid business case and comprehensive strategy to get the jo