(I currently have 18 and usable in just two clicks.) After a couple of minutes, the new addition will be installed and available for use. Scroll down and find, Hindi, or any other language you want to add, and click the, Add, button. On the, Change your language preferences, page click the, Add language, tab. Go to the windows control panel and click on, Language. I maintain the MooTyper plugin, and when developing different language keyboard layouts, I find myself needing to type in each of the languages alphabets, and this is how I do it.