I am using 2011 theme, any how I managed to get sidebar on single.php pages by installing child theme,
But now I want sidebar on pages,
How do I get it?
Funny you should ask, I've just posted an How to tutorial on how to add a sidebar on posts and pages in Twenty Eleven
Bainternet's tutorial is very good.
Another tutorial, which worked for me (and is actually a little simpler) is here:
And here's what I added to my functions.php file, after studying both tutorials:
I didn't have to make any changes to CSS, and it worked!