Hi!
Just wanted to know what is the keyboard shortcut for maximizing a window, any window, a browser or something?

HI,
Here is much more than you asked for, but it's in there somewhere:

Close current window... CTRL+W
Open a new window... CTRL+N
Toggle between full-screen and regular views of the browser window. F11

Display Internet Explorer Help, or when in a dialog box, display context Help on an item. F1

Move forward through the items on a Web page, the Address bar, and the Links bar. TAB
Move back through the items on a Web page, the Address bar, and the Links bar. SHIFT+TAB
Go to your Home page. ALT+HOME
Go to the next page. ALT+RIGHT ARROW
Go to the previous page. ALT+LEFT ARROW or
BACKSPACE
Display a shortcut menu for a link. SHIFT+F10
Move forward between frames. CTRL+TAB or
F6
Move back between frames. SHIFT+CTRL+TAB
Scroll toward the beginning of a document. UP ARROW
Scroll toward the end of a document. DOWN ARROW
Scroll toward the beginning of a document in larger increments. PAGE UP
Scroll toward the end of a document in larger increments. PAGE DOWN
Move to the beginning of a document. HOME
Move to the end of a document. END
Find on this page. CTRL+F
Refresh the current Web page. F5 or
CTRL+R
Refresh the current Web page, even if the time stamp for the Web version and your locally stored version are the same. CTRL+F5
Stop downloading a page. ESC
Go to a new location. CTRL+O or
CTRL+L


Save the current page. CTRL+S
Print the current page or active frame. CTRL+P
Activate a selected link. ENTER
Open the Search bar. CTRL+E
Open the Favorites bar. CTRL+I
Open the History bar. CTRL+H
In the History or Favorites bars, open multiple folders. CTRL+click

Another trick for have all windows maximized is go to any window, maximize it, then click on File at the top left, then click on Close.
The windows then open maximized.

Best wishes,
fredg

And to answer your question : Press alt+space+m

this maximizes/minimizes the window. You kan also press just alt+space to get the menu with max, min, mov etc

[edit]
sry about that. Alt+space+x maximizes and alt+space+m minimizes

just bring up the menu alt+space and have a look at the underlined letters