The Embraer 145 Bleed System panel looks straightforward but could use a little practice for becoming proficient and understanding the different configurations. Be the first kid on the block not to get a Master Caution - PAC1/2 VLV FAIL during IOE! It's a nuisance message, indeed, but operating the system to minimize exposure to these EICAS alerts is a good goal so we can focus on meaningful tasks like taxiing.