Lines and Dots!

 Looking at images from the web that I've found just with Google images, I differentiated the two main types of graphics which is Vectors and bitmaps. 

Bitmaps are simply your everyday image great for photography, here is one from my flickr account. They are pixel based images where by the computer reads different colours and plots them onto a grid to create an image. These dots are also known as pixels.

This is a Vector Image, as seen in the picture below, they are very good for curves and they don't lose quality in scale and so the don't lose quality when blown up to huge sizes. Something bitmaps aren't very good at. Instead, they just go blurry as your only increasing the size of the pixels, a term known as pixels.
 

Now to Illustrator to practice some vectors...

Here is the vector I created. This again isn't an image I made from scratch myself but instead a representation of the properties that vectors have. This one contains 40 odd colours and again but this time only in black and white...

 Vectors are great ways to pick up the tones in a picture and still keep its quality in a large format. This introduction in to the sheer basics of digital art has helped me also to gain the simple knowledge and the use of the first tools on Photoshop and illustrator.