Take a look at the Cyrillic( Ćirilica) and Latin (Latinica) scripts which we have and repeat the letters one by one. For the sake of easy learning and translation to English, I use the Latin alphabet, but you can always print both on one page and keep it handy. If you hava a colour printer, you can use this link to print it on one A4 page.
There is one more explanation, where you can clearly hear and see the letters of both alphabets Link 1.:
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