The overview is what you should be learning but 3k is way way too much. Every topic they are covering can be found on google or a decent book from Amazon. I suggest buying a cheap hostmonster account and learning some PHP. This tutorial is pretty good http://devzone.zend.com/6/php-101-php-for-the-absolute-begin...
Don't just focus on front end skills and think you don't have to learn how it works on the backend because a frontend is just something to look at it if doesn't have the server side component.
Don't just focus on front end skills and think you don't have to learn how it works on the backend because a frontend is just something to look at it if doesn't have the server side component.