Key Buttons/ Shortcut on Android

Do you have any trouble with the android key button?Here are some tips for shortcut keys on android's phone..but for the first i want to share you typing tips for android :

Insert special character: Press ALT + Spacebar
Delete entire line of text: Press ALT + Delete
Turn on all caps: Press Shift Twice
Move cursor to end or beginning of text: Press Alt while scrolling Trackball
Insert a Tab space: Press Alt + Q
While typing, press menu and delete. It will delete a word at a time.
Highlight text: Press Shift and roll Trackball

To Cut, press Menu and x.
To Copy, press Menu and c
To Paste, press Menu and v.

Create your own shortcuts:
Settings > Application settings > Quick launch

Open applications:

Browser press SEARCH + b
Contacts press SEARCH + c
E-Mail press SEARCH + e
Google Mail SEARCH + g
Calendar SEARCH + l
Maps SEARCH + m
Music SEARCH + p
Messaging SEARCH + s
YouTube SEARCH + y
You can add/change these here: Settings > Application settings > Quick launch

Scrolling tips:
Page down SPACEBAR
Page up SHIFT + SPACEBAR
Jump to end of list ALT + TRACKBALL roll DOWN
Jump to top of list ALT + TRACKBALL roll UP

Typing and text navigation tips:

Insert special character ALT + SPACEBAR opens special character selector
Delete character to left DEL
Delete character to right SHIFT + DEL
Delete entire line ALT + DEL
Persistent CAPS Press SHIFT twice; press SHIFT again to escape
Jump cursor to beginning/end of line ALT + roll TRACKBALL left/right
Create tab character ALT + q
Highlight (select) text SHIFT + roll TRACKBALL
Cut text MENU + x, or Highlight text, press & hold TRACKBALL, select Cut
Copy text to clipboard MENU + c, or Highlight text, press & hold
TRACKBALL, select Copy
Paste text copied to clipboard MENU + v, or Highlight text, press & hold
TRACKBALL, select Paste
Undo change MENU + z
Select all text in field MENU + a, or Highlight text, press & hold
TRACKBALL, select Select all

Browser tips:

Open Go to window MENU + s
Open Bookmarks MENU + b
Open Windows MENU + w
View history MENU + h
Refresh or stop page MENU + r
Go back a page MENU + j
Go forward a page MENU + k
Find on page MENU + f
Go to home page MENU + ENTER
Zoom in MENU + i
Zoom out MENU + o
Go to Settings MENU + p
Page down SPACEBAR
Page up SHIFT + SPACEBAR

Map shortcuts

Directions MENU + d
Select map mode MENU + m
History MENU + h
My Location MENU + 0 (zero)
Go to Settings MENU + p
Zoom in MENU + i
Zoom out MENU + o

GMail shortcuts (while viewing message)

Forward F
Reply R
Reply All A
Archive Y (works on list mode too)

Other Google apps:

If you are in the mood for more shortcuts on any google apps like mail, calendar, docs, try typing: “?” in the webbrowser when using that app.

That's the android's key button hope it's helpfull