For CSS/HTML, things like Firebug and Webkit Inspector can help massively too. You cut out the edit-save-refresh process across two applications out. You can us

For CSS/HTML, things like Firebug and Webkit Inspector can help massively too. You cut out the edit-save-refresh process across two applications out. You can usually cycle across available properties and their valid values too, which makes it even better for learning. Seeing things in real-time as opposed to refreshing over is a much better way to learn, based on my experience. It's a shame we can't do this with more stuff. I guess, in general terms, anything that cuts the time between writing code and seeing results will be a great help to you. Not only that, these tools will stay with you as you progress past a beginner stage since they'll always provide that efficiency boost.