Below are helpful resources to help organize practices, drill suggestions and other articles. The Berkeley Baseball workbook is extremely comprehensive.
These were provided by Drew Marino who runs some of the BPRBA coach clinics.
Coordinating a Baseball Practice:
http://www.active.com/baseball/articles/how-to-run-an-efficient-baseball-practice
http://www.baseballtrainingsecrets.com/articles/baseball-practice-plan.php
Throwing Drills:
http://www.stack.com/2013/05/28/baseball-throwing-drills/
http://berkeleybaseball.com/web_documents/youth_baseball_fundamentals_workbook.pdf
Hitting Drills:
http://baseballrebellion.com/cpippitt/head-light-head-right-drill/