there are alot of options in different programs that are not typically hidden but we don't know about it because no one is going to read the manual of every program he uses and those options sometimes are sooooo useful
so i'm gonna list the things that i know and if u have some then u can share them
1-New Tab - Press The Wheel
but u can simply "Press the wheel" yes ,on the link and press the scroll wheel in ur mouse . .
2-Key Board Navigation - according to ur speed
when u are browsing a folder with soooooo many files and u want a specific one what do u do u can sort them by type or name and search with ur eyes
if u r more experienced u press the button of the first character of the file name
but what if there are so many files start with the same character u can write the full name of the file -ofcourse if u know it :D - or the first bunch of letters and explorer will select the file with the proper name but it will work only according to ur speed in typing .
3-cmd has auto complete !!!!
yep it has, just open it and press "Tab" or write "cd " and press "Tab" .
4-Safely Remove USB Device
every time u want to remove ur flash stick u RMB click on the icon in the system tray and Safely Remove Hardware -> Choose the device -> Stop but u can LMB on the tray icon and safely remove the device .
5-U DONT EVEN NEED TO DO THAT - JUST GRAB IT OUT
if u want ur flash memory then grab it out of the PC every PC i've seen is by default configured to remove flash memories without being stopped or ejected from the PC
thats what i can remember now
Pliz feal free to add :)