I have an EliteBook.
My understanding is that the keyboard shortcut for selecting text to the left/right is Shift-Home and Shift-End respectively. However, this keyboard does not have Home or End keys, so I have to use Fn+Left Arrow and Fn+Right Arrow
Typing Fn+Shift activates fn lock. As a result typing Fn+Shift+Right Arrow does not result in selecting text to the right (or, in the case of Left, Up, or Down arrows, start of line, top of text, and bottom of text respectively).
Selecting text to the left and right seems like a pretty common thing people would want to do, so it seems like there must be some way of doing this on a laptop keyboard.