I'd have to show you in steps, probably. Let's just go with 1001 Fonts, though.
http://www.1001fonts.com/Okay. There's the link. Now just select whatever type of font you'd like,(brandname, cartoon, grafiti, etc.) click on that and browse through untill you find one you like. Where it says "Download: Win TruType", click the "Win TruType". (unless you have Mac, if that's the case click the lower) When the pop-up..pops..up..click "save".
Then to install, you'd have to find the folder it saved it. You unzip(should say "Extract all files") the files, and when it tells you where you want to save it, find "Fonts". (My Computer - Local disc C - Windows - Fonts) And that's it. =3
Just a note, though. I'm not telling you to download anything. XD Just showing you how to go about doing it if you wanted to. 1001 Fonts is more trustworthy than other, but you should use extreme caution when downloading fonts anywhere. (even this site) A lot of free fonts come with spyware risks.