Today I studied about Bézier curves. It seems to be a cool subject and I hope to study it in depth in Computer Graphics.
The lesson in the tutorial about Bevel Objects was not clear for me, so I read from the blender manual and I think I understood.
That page also links to a nice tutorial about using Bézier curves to model 2D shapes. I decided to follow it using the logo of Computer Engineering / Science of my University. To apply the gold texture I followed a texture lesson from the tutorial.

So, we conclude that drawing 2D images is quite easy using Bézier curves. The main advantage of Bézier curves is that to store it we need no more than 6 vertices (I think). In the logo above I used less than 100 Bézier curves.