Although the method written here is for all , this tutorial is actually focused for new linux users like me :) So rather than using the terminal,  I used the Graphical User Interface here as much as possible.

Well, lets begin.

Installing Fonts

First, since you want to install some fonts, you need to have them contained in a folder. So, collect the fonts you want to install and put them in a folder anywhere you want. Then just select them, right click and copy.

Now, double-click on the Home Folder in your desktop.

Now, make a folder named .fonts here (don't forget to put a dot before).

As you create it, it may vanish. But don't panic. Just click on "View" > "Show Hidden Files".

Now the folder should be back along with many other folders. Just double-click on it to enter.

Now, right click in anywhere in the blank space and click on "Paste".

That's it!!! You are done. Now, just save your works (if any) and log out. Log back in and your fonts should present in any fonts' list.

Installing Microsoft Fonts

If you want to install Microsoft fonts, there's an easy way. Just go to your package manager and look for a package named "ttf-mscorefonts-installer". Click on it, Mark for installation and apply. You'er done.

More Fonts Installation

Remember, there is more fonts in the repository. So, check them out. Go to your "Package Manager" and try searching for 'fonts'. You'll see various fonts packages there. May be you are looking for some of them. So, Install them and explore.