i am a Sri lankan so my mother tongue is Sinhala language.i need to render sinhala documents on cool reader android app but it couldn't render sinhala documents because its haven't sinhala font so i need to include sinhala font(custom font)  into cool reader. i tried in different ways but i could not figure out any solution for this problem so please colud you help me to add custom font into the cool reader(android) ?

In the main CR3 directory make a folder named "fonts" and put the font you desire in it. Then go to the settings of CR3 and set the font.

Ok, but where I can exactly find CR3 folder? I´m trying to find it half an hour and I´m getting furious. I´m Android newbie, I´m Symbian guy :D I have Sony Xperia Tipo.