When leaving a junction, how far before you get to it should you change to gear 1?

And how do you get from the gear change to leaving the junction?

Do you just slowly release the clutch as usual...I seem to manage to stall it after gear changes at junctions.When leaving a junction, how far before you get to it should you change to gear 1?
listen to your motor and you start in first once you feel car start to move you give more gas and let off when you shift listen most likey about 15 to 20 mph could be lower keep trying you wil get itWhen leaving a junction, how far before you get to it should you change to gear 1?
put it in neutral when preparing to stop



i usually shift gears when i reach 2000 rpms