Q: What's the difference between a raster and a vector?
A: Rasters are made of pixels. Vectors are made of shapes and contain nodes (things that affect shapes).
Q: Do you know of any vector file types?
A: Yes. They're .svg, .svgz, .ai, and .fla.
Q: Is Inkscape the most recommended free program for vectoring?
A: I only got two vector programs: Do Ink and Inkscape. However, Inkscape was better, and the MLP vector club on deviantart recommended it the most.
Q: If my tool that I could use to draw Bezier Curves and straight lines stops working, what tool should I use?
A: I'm not sure. If the other drawing tools stop working too, you should probably get Adobe Illustrator if you can afford it. It's recommended by the MLP vector club.
Q: What's with the circle outlines and blue lines in this image?
A: Those create curves. To delete them, move them to their nodes.
If you have any Inkscape/vector questions, the "Tutorials" folder for the MLP vector club may have answers. If not, check the Inkscape website, and if that doesn't answer your question(s), ask me.