Where to start learning about JavaScript?

I know HTML, CSS, jQuery, as well as PHP and MySQL.

But: I don't know anything about regular JavaScript and what is possible in general.

Where can I learn what is possible with JavaScript?

Thanks
Timo

There are many many javascript resources out there, but I recommend these:

http://jstherightway.org/
http://eloquentjavascript.net/
http://www.codecademy.com/
https://ilovecoding.org/
http://eloquentjavascript.net/1st_edition/contents.html

Should keep you busy!

thank you ! this should keep me busy indeed!

I have learned a lot from thenewboston on youtube in php jquery and javascript stuff