I am quite sure LorriAbleC meant "diacritic marks" when she said "accents". Most foreigners call them accents even though only some diacritic marks can be called as such (čárka yes, háček no).
If you mean the diacritic marks on some letters, like é or ž, all you have to do is to read the "tips and notes" section on the first skill, where they explain the letters and their sounds.