Select to the end of a line of text:

Shift-End

Move to the end of a line of text:

End

Select to the start...

Shift-Home

Move to the start...

Home

Select to the end of everything...

Ctrl-Shift-End

Move to the end of everything...

Ctrl-End

Select to the start of everything...

Ctrl-Shift-Home

Move to the start of everything...

Ctrl-Home

Select forwards, character-by-character...

Shift-Rightarrow (same!)

Select backwards, char by char...

Shift-Leftarrow (same!)

And if I want to start at the top of this posting, and select every line, line-by-line I go:

Ctrl-Home, Shift-Downarrow (line by line)

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