The Green Bay Packers begin three weeks of organized team activities today (Monday). Normally, one O-T-A practice is open to fans each week — and the first public workout is scheduled for tomorrow (Tuesday) at 11:30 a-m at Clarke Hinkle Field on Oneida Street across from Lambeau. If there’s bad weather, the session will be moved inside with no access for the general public. Both rookies and veterans have a lot to learn this offseason, including an offense that’s expected to use dual tight end formations to give quarterback Aaron Rodgers more chances to throw up the middle. O-T-A’s are voluntary for the players, and they’re required to attend a three day minicamp June 13th through 15th.