How can I go out within my budget?

You can still have a good time without necessarily spending a lot of cash. Instead of going on the traditional dinner date try taking her out later for ice cream and then for a walk back to your place to hang out with some popcorn and a movie. If she likes to have a few drinks make your own mixed drinks. She will appreciate some quality time with just you if she is into you. Also you could try making dinner from a cookbook if you don't really know how to make something really good. If you cook her dinner as apposed to taking her to dinner it will be more personable and you will get good props out of that one. It doesn't necessarily have to be expensive and fancy either. A salad always makes a dinner look nice with some dinner rolls and then just make some grilled chicken with rice or something. Just come up with something that isn't costly but tastes good. Maybe you could even involve her in the cooking process it is romantic to do that.

you don't have to spend loads to impress a girl, they love to be spoiled but that doesn't always mean spending loads of money on them .. take them out for a picnic with the money you would use to buy you dinner.. take her somewhere that can be special for you 2 and isn't crowded by other people.. have a picnic and take a radio so you can dance a bit.