Awesome, glad to hear that you're willing to learn. Don't worry about lenses just yet, you'll have time to build up your collection. Just focus on learning how your camera works.
Do you understand the concept of Aperature and Shutter Speed? How about your light meter? BTW your light meter is like your god, you needa follow it like a religion. INSTEAD of some other cases when you are experimenting.
Basically the light meter will tell you if your picture will either be too dark (over exposed) or too light (under exposed). You could see if the picture will be taken with a balance of both is when.. you press down the button half way so the camera could auto focus but also give you a reading of how the picture would turn out.
If you want to get pictures with like one thing will be focus while the background will be blurred or the other way around you would need to change the focus point in your camera and the light meter would tell you what is a good balance AT that focus point but not around it, so be aware of that.
The focus points could be changed from any of the modes above Auto. How you change them is when you look at the camera, the off / on switch move down to where your finger is on two buttons the one that have a magnifying glass with a + would be the one to change the focus points. You change these by the uhhh crap i don't know what exactly but this gear looking thing next to the button where you take the picture. When you do this then the dots inside the viewer would change.