[PLUG] linux mint 18.

[jayant ogale]

hi,
recently i have installed linux mint 18 on my lap top.
i would like to know
1] how to increase the size of desktop icons.
2] how to store wi-fi password permanently [every time i start it asks for the wi-fi password].
i have done net search for this, but could not get the solution.
if someone has installed it and have a first hand experience please help.
thanks in advance.
jayant ogale.