Busy Weekend

So, I moved into my new apartment on Sunday. (If you want a glimpse of it - there are pictures on my facebook.) It's cute - but I'm already starting to feel the burden of the expenses and I'm not even paying for my apartment!! My parents are! Point being, I hate feeling like I am putting a huge load on my parents. It's not fair to them. I'm almost 21 years old and I can't even fend for myself (financially). Any one have any money saving tips for me? I'd appreciate them.