I learned to read Cyrillic from reading Wikipedia. I got obsessed with Russian history and Russian entries in Wikipedia have the English name alongside the Cyrillic spelling. So, I read the Russian words alongside the English spelling to help me how to read in Russian. I also thought I could try reading Greek since Cyrillic is based from it, but for some reason I am struggling. I think I can quickly learn to read letters based from the shape and the sound they represent but Greek letters are a bit more complicated for me.