1) because there will be some solution on the lens still when
you take out from your lens container, your lens will sit on your
finger. so the point is to keep your eyes from closing as a natural
reflex... i personally use my left index to hold up my upper
eyelid, and left middle finger to hold down bottom of eye and shove
the lens in. 
2) the moment your fingertips touch your eyeball you should retract
your finger already. the lens should place itself.
3) if i realised it didnt sit properly and had rolled to the back
of my eyelid, i usually will close my eyes and massage eyelid. if
it is just slightly misaligned, will roll my eyes. haha.
4) close a few minutes? can la. a few hours actually also nevermind
one, just not very good. i sleep 40mins on bus to and from work,
never had a problem.
5) depending whether you are using hard lens or soft lens. if hard
lens you have to 'blink' it out (me softlens user, so not 100%
sure). if soft lens, very easy once you get over the fear... use
left hand keep your eye open, right thumb and index finger pinch
out the lens.
when you are really used to it, you can take out using one hand...
middle finger hold down bottom of eye, thumb and finger gouge
eye.
