I want to be employable as a Front End Web Developer but can only write CSS/HTML along with a little bit of Jquery (on a tangent: moderate amount of PHP) but no understanding of Javascript.
The current skillset was learnt quite fast (9 months) through programming a website.. so I think projects are the best way to learn.
Any ideas on some simple projects/resources to learn and practice Javascript? I like Project Euler but the site only focuses on maths - maybe similar styled questions targeted at user interaction and core capabilities?
You already know enough, go apply for positions with companies even though you may only know a small amount, you will learn best by having projects to tackle on the job. Any organization that hires you will know your experience through the interview process.
If you do not do this and feel you need more experience, create a project for yourself or someone else, build a website, teach yourself how to build a .JS slideshow for example.
A decent book on JS that I have used is http://ineasysteps.com/products-page/programming/javascript-in-easy-steps-5th-edition/
You can try this book as well http://www.htmlandcssbook.com/
If you are into onlin learning try Code Academy http://www.codecademy.com/ or Code School https://www.codeschool.com/ or Tree House http://teamtreehouse.com/ courses