There are two places you can install fonts. One would be under your Home folder called .fonts
This one is a hidden folder just for your user account only. If you are the only one on the system, this is where I usually install my fonts.
The other would be under /usr/share/fonts
This is the system-wide place to add your fonts, especially if you share your system with other users
You can install "ttf" fonts, and the system will read them like normal.
It's perfectly OK to express an opinion, but refrain from foul and stupid language