Does anyone have any recommendations for intermediate level web development texts, websites, tutorials, etc?

I've been teaching myself for some personal projects, and had an easy time finding "Javascript/PHP/CSS 101" type materials, and have a decent grasp of these. But when it comes to sticking them all together into an application, I find myself just guessing what the best way to do things is. What I should do server side vs in the browser, when to use iframes vs ajax requests vs reloading the page, etc.