Is Serbian hard to learn for an English speaker?

The short answer

Harder than Spanish, easier than Arabic, and much more regular than it looks. The US Foreign Service Institute puts Serbian in its third of four difficulty groups, alongside Russian and Polish: around 1,100 class hours to professional fluency, against roughly 600 for Spanish or French. That number measures a diplomat's target, not yours. Ordering coffee, reading a menu and holding a short conversation come far earlier, because the hard parts of Serbian are front-loaded and then stop growing.

What is genuinely hard

Seven cases. English marks the role of a noun with word order and prepositions. Serbian marks it with the ending of the noun, and of every adjective attached to it. Grad is a city, u gradu is in the city, iz grada is from the city. Each noun has up to seven forms in the singular and seven in the plural, and you have to produce the right one every time you speak. This is the single biggest difference from English and it is where most of your early mistakes will be.

Three genders that decide everything. Every noun is masculine, feminine or neuter, and the gender chooses the adjective ending, the past tense ending and the pronoun. The good news is that gender is almost always visible in the word itself: nouns ending in a consonant are usually masculine, in -a feminine, in -o or -e neuter.

Verb aspect. Most actions have two verbs, one for the completed act and one for the ongoing or repeated one: pisati (to be writing) and napisati (to write to the end). English hides this inside tenses; Serbian puts it in the dictionary. It takes a while before choosing the right one feels natural.

Two or three sounds. The rolled r, and the pair č / ć (and dž / đ), which many native speakers themselves merge in casual speech. The rest of the sound system is close to English.

What is easier than you fear

Spelling is phonetic. One letter, one sound, always. You can pronounce any word you can read, and write any word you can hear. There are no silent letters and no spelling to memorise.

No articles. No a, no the, no rules about when to leave them out.

Few tenses in daily use. Spoken Serbian gets by with a present, one past tense and one future. The remaining tenses exist mainly in literature. Compare that with the dozen forms an English learner has to sort out.

Two alphabets, but you only need one to start. Serbian is written in both Cyrillic and Latin script, and the two map letter for letter. Latin is everywhere in daily life and online, so you can begin with it and add Cyrillic once the language itself is no longer the problem. Learning Cyrillic takes a few days, not months.

Word formation is transparent. Once you know a root, whole families of words open up: pisati (to write), pismo (a letter), pisac (a writer), potpis (a signature).

How long it takes

For a first conversation, count in months of regular practice, not years. For the cases to stop being a conscious effort, count a year or more. The mistake to avoid is treating the cases as something to study before you speak. They are learned by producing sentences and being corrected, thousands of times, not by memorising tables.

What to learn first

1. The alphabet and the sounds, in a day or two.
2. The verb biti (to be) and the present tense, which is regular and gets you talking.
3. The nominative and accusative, the two cases that carry most simple sentences.
4. Gender, because every adjective and past tense depends on it.
5. The other cases, one at a time, each with the prepositions that demand it.

Everything else, including aspect and the remaining tenses, can wait until sentences come out of you without thinking about the endings.