Since 1959, Butler Learning Systems (BLS) has partnered with organizations to supply sales training, consulting, leadership improvement and service perfection…providing relationships and altering lives. Succeed sales certification as The Sales Professional® (TSP) by completing the Certified Selling System. Sell deeper and wider in your key accounts with T.E.A.M. SellingTM as you serve the Client Buying Team with your Account Selling Team. Let BLS to become your sales training partner to maximize income, margin and marketshare.