Obviously 100 free fonts is too much for you to handle right now. Fonts generally do not come with an installer so clicking on a font will not install it. Lots of fonts come in a zipped file (fontname.zip) so have to be unzipped before being installed.
So goto
http://www.fontcubes.com/ and download the font named Ginga. This comes in a file named Ginga.zip.
You must know to which folder your browser or download manager will download this.When the downloading is complete browse to where the file is stored and click on it. Your default unzipping program (WinZip, IZarc etc..) will open and unzip the file to wherever you want, be it the desktop or any other location.
Now goto Control Panel>Fonts>File tab>Install New Font. Browse to where the unzipped font is stored and Ginga.ttf will appear in the List of Fonts box. Highlight it and click OK. The Ginga.ttf font will now be installed.
Practice a few times then go for your 101 download..
Good luck.