Ĉiu spektanto elektas ĝenron kaj legas recenzon.

Ĉiu means each or every.

In this sentence, Ĉiu spektanto means each spectator / every spectator. Esperanto often uses ĉiu with a singular noun when it means people or things considered one by one.

So:

• ĉiu spektanto = each spectator
• ĉiuj spektantoj = all the spectators / every spectator in a plural sense

Both can sometimes be translated similarly in English, but ĉiu spektanto emphasizes individuals one at a time.

Because ĉiu normally goes with a singular noun when it means each.

So Esperanto says:

• Ĉiu spektanto elektas... = Each spectator chooses...

not:

• Ĉiu spektantoj... ❌

If you want a plural form, you would use ĉiuj:

• Ĉiuj spektantoj elektas... = All the spectators choose...

Spektanto is built from parts:

• spekt- = the root related to watching/viewing
• -ant- = a person doing an action right now or generally doing it
• -o = noun ending

So spektanto literally means a person who is watching, which in normal English is spectator or viewer.

This is a very common Esperanto pattern:

• lernanto = learner, student
• parolanto = speaker
• kantanto = singer

In Esperanto, -as marks the present tense.

So:

• elektas = chooses / is choosing
• legas = reads / is reading

A useful thing for English speakers: the verb ending does not change depending on the subject.

So all of these use -as:

• mi legas = I read
• vi legas = you read
• li legas = he reads
• ili legas = they read

Unlike English, there is no special -s only for he/she/it. Esperanto keeps the same present-tense ending for everyone.

The -n ending marks the direct object in Esperanto.

These are the things being acted on:

• elektas ĝenron = chooses a genre
• legas recenzon = reads a review

So:

• ĝenro = genre
• ĝenron = a genre, as the direct object
• recenzo = review
• recenzon = a review, as the direct object

This is called the accusative ending.

Add -n to the noun that receives the action of the verb.

Ask:

• What is being chosen? → ĝenron
• What is being read? → recenzon

The subject does not take -n here:

• Ĉiu spektanto = the one doing the actions

The objects do:

• ĝenron
• recenzon

So the pattern is:

subject + verb + object-n

Esperanto does not have an indefinite article like English a/an.

So a bare noun can often mean:

• a spectator
• a genre
• a review

depending on context.

Esperanto does have a definite article, la, meaning the, but it is only used when needed.

In this sentence, the nouns are general, so no article is necessary:

• Ĉiu spektanto = each spectator
• ĝenron = a genre
• recenzon = a review

You could add la in other contexts, but here it would change the feel and make the nouns more specific.

Because the same subject continues for both verbs.

So:

• Ĉiu spektanto elektas ĝenron kaj legas recenzon.

means:

• Each spectator chooses a genre and reads a review.

Just like in English, once the subject has been stated, it does not need to be repeated if it is still the subject of the next verb.

You could technically repeat it for emphasis or clarity in a longer sentence, but normally you would not.

Kaj means and.

Here it connects two actions done by the same subject:

• elektas ĝenron
• legas recenzon

So the structure is:

• Ĉiu spektanto
  • elects a genre
    • and
      • reads a review

It is a very common coordinating word, just like English and.

A few pronunciation points in this sentence are especially useful:

• ĉ sounds like ch in church
• ĝ sounds like j in judge
• j sounds like English y
• each vowel is pronounced clearly

So roughly:

• ĉiu ≈ CHEE-oo
  The i and u are both heard: ĉi-u
• ĝenron ≈ JEN-ron
• kaj ≈ kai or kahy, with j sounding like y

Also, Esperanto stress usually falls on the second-to-last syllable:

• ĈI-u
• ĜEN-ron
• re-CEN-zon

The normal word order is the one you see here:

• Ĉiu spektanto elektas ĝenron kaj legas recenzon.

That is the most natural, neutral order.

But Esperanto is more flexible than English because the -n ending shows the direct object. So the sentence could be rearranged and still be understandable.

For example, a more marked version could be:

• Ĝenron elektas ĉiu spektanto.

Because ĝenron has -n, you still know it is the object.

Even so, learners should usually stick to the standard order first:

subject + verb + object

Yes. In many sentences, ĉiu can be translated as either each or every.

For example:

• Ĉiu spektanto elektas ĝenron.
  • Each spectator chooses a genre.
  • Every spectator chooses a genre.

The difference is mostly about English style and nuance:

• each feels a bit more individual
• every feels a bit more general

Esperanto ĉiu can cover both ideas, and context usually makes the meaning clear.