VIM - How to select a substring

Question

I have the following line, that has no spaces -

123456789abcdefghij01234123456780900dfasdfsadfsadfsa

I want to select (highlight for yanking) 10 characters, starting at column 10.

I can navigate to column 10 by :10| but then how would I visually select ten characters starting under the cursor?

Answer 1

10|v9l

(without the colon) moves the cursor to column 10, enters visual mode and expands the selection 9 characters to the right, ready to yank.