There is no thought to the composition of the images. Here is my favorite link on the composition basics:
Guidelines for Better Photographic Composition.
There is no creative use of the exposure triangle to get proper exposure or to control the image. The exposure is off on all but 1. Focus is lacking on most of them. There is no control or thought put into them. They are just random snaps of things.
You are at the beginning of a long and wonderful journey. Did I mention LONG? There is A LOT for you to learn now, grasshopper!
Start with the link on good composition I gave you. EVERYONE-even a cheap crappy point and shoot can make some pretty amazing images if you use good composition.
Composition is something you can take months and months and months to work with and never stop learning new things. I'm a FIRM believer that EVERY photographer from the newest to the most seasoned should do a FULL study on composition at least once a year. I do it whenever I run out of inspiration and I learn something new or find a new way to see things every time I do it. There is much more advanced stuff to composition too, but the basics are always what I come back to every time.
Then you need to begin learning about exposure-the exposure triangle. How it works to create proper exposure of the image as well as how it works creatively to produce the image you envision in your head on the film or sensor. Digital Photograph School has some great tutorials to start you out here:
Digital Photography Tips and Tutorials
As you travel along this long and winding road post your questions and your images for critique. When you do post images please tell us what you are working on (aperture, depth of field, focus, composition, etc...) so we know what to help you with most. Please include your settings with any images if at all possible. If you don't know what the settings are you can right click on an image and go to the details tab. We also need to know the mode you shot in (auto, TV, AV, P, M...) when you are working on exposure.