English relies on word order; Serbian relies on cases. A good dictionary will list nouns with their genitive form or gender. Look for markers like m. (masculine), ž. (feminine), or s. (neuter).
Serbian is a digraphic language. A high-quality must display Serbian entries in both Latinicu (Latin) and Ćirilicu (Cyrillic). For example, the word "school" should translate to škola (Latin) and школа (Cyrillic). englesko srpski recnik pdf
The Digital Bridge: Why the "Englesko-Srpski Rečnik PDF" Remains a Lifeline for Learners English relies on word order; Serbian relies on cases
Za one koji traže modernije rečnike fokusirane na najčešće korišćene reči, LinguaShop nudi rečnike od 5000 reči optimizovane za mobilne uređaje. English relies on word order