Сантино\Лайка
If you're using windows, go to Control Panel>Regional and Language Options, then click the "languages" tab.
Click on the 'details' on the "Text Services and Input Languages Tab", then select 'settings'.
On the "installed services" tab, scroll down to select the language alphabet you want to add. If you have the full windows version installed, Russian and Cyrillic alphabets (Bulgarian, Croatian, etc) are there. Once the alphabet you selected is highlighted, click "add".
Then click the 'language' bar at the bottom of the tab. Check "Show the Language Bar on the desktop" and "Show additional Language bar icons in the taskbar". You'll need these so that you can easily shift from one alphabet to another whilst typing. Then click OK.
You should be able to see icons (eg, EN for english, RU for Russian, etc) in your windows taskbar. They should be at the bottom right.)
Note that when you click RU for Russian, your keyboard will follow the Russian typewriter layout. For example, striking the keys A,S,D,F will type in the cyrillic letters Ф,Ы,В,А respectively.
The same procedure will also allow you to type in whatever language you want- for example, 汉语,or even にほんご 😀
There is a similar method for Macintosh described by Doug above, where there is an option for typing cyrillic phonetically so that you don't have to learn or memorize the cyrillic typewriter keyboard.
Jay
edit: sorry didn't read your post well, it did say you didn't use windows 😱