Pricing for CSS coding

Hey, so I've almost accidentally picked up a large number of jobs in the last month (I'm a student on winter break, super bored), starting the first one literally having absolutely no idea how to use css and learning on the job to get through it. Now I've picked up a few jobs that require a CMS (opted for Drupal, after some research), and have managed to learn how implement one.

Although I am somehow stumbling my way through all these jobs, I still really have no idea how I should be charging for them. As I get more and more jobs, I realize this should be something I have under control. Right now, I start by asking what their budget is and going from there, and have been picking up somewhere around $500 for full website design, css coding, and social media service. Is this too much? Too little?

I also recently picked up a job doing just css coding and drupal development (no design) - what's a reasonable price range to look at for this? I always spend more hours than a pro would, because I'm almost always learning on the job, and I don't want to charge them for my learning process, you know?

Do you guys usually charge by hour, or by project? Can anyone give me some details on how you usually do pricing?

Thanks sooomuch!! :)

Moved to more appropriate forum.

Honestly because you are learning stuff you haven't done before I think you are charging them too much. People say you get what you pay for but 500 dollars can get you a lot but from the sounds of things it may not be much. IMO don't take on jobs you can't do. I normally charge hourly but some clients have a set budget and I work from that but any changes outside of the original scope of the project, I charge hourly for.

Sorry for posting in the wrong place, and thanks for moving this and for the response!

I never take on things that I am absolutely in the dark on, but I learn best (and I assume this is the case with many) by seeing things in action, so for me the best way to get new things under my belt is to go into it knowing some background but not having extensive experience, and refine my knowledge on the job. You gotta start somewhere, right?

Ok, well that's good then (at least its not too little, right?). It's not like I do any worse of a job, it just takes me longer to debug and such because I don't have as much experience. What is a reasonable range for hourly charge, do you think, for design, coding, or CMS development? Of course, I'd leave out any hours that I spent figuring things out or trying to fix bugs.