VSDC is a full-featured free video editing tool that you can install on Windows. A fair warning though: This program might be a little hard to use for beginners because of the sheer number of features and menus.
However, if you poke around for while and play with your videos within the editor, you'll find that it's not quite as daunting as it seemed when you first opened it.
There's even a wizard you can run to make things easier. Use it to do add lines, text, and shapes, as well as charts, animations, images, audio, and subtitles. Plus, as any good video editor should, VSDC can export videos to a variety of file formats.