Depends on the Max brightness of the Laptop you are talking about all I would suggest is to buy a light anti-glare screen for your laptop.
on a dell inspiron laptop F1 is used to connect your laptop to another screen, extend your screen or connect to a projecter. F2 is to connect or unconnect to the internet and F5 is to make the screen lighter
you cant make it lighter there is one way. buy one that's lighter.
It depends on what type of computer you have. You should have something like a "Preferences" application though, where you can adjust the lighting and contrast.
How do make a wooden boat lighter
No. Nothing will make your skin lighter but staying out of the sun.
yes margarine is lighter
No, lime can't make your face lighter only yoghurt can.
no
NO ! -Use white to make grey lighter.
Hydrogen peroxide are mixed with dye and or lightener/bleach to make your hair lighter.
Vacuum sealing clothes does not make them lighter, but it compresses them to save space.
you fold the paper to look like a lighter