Quero divulgar o episódio hoje.

Because after querer when you mean to want to do something, the next verb stays in the infinitive.

• quero divulgar = I want to publicize / share / promote
• not quero divulgo

This is the same pattern as:

• quero comer = I want to eat
• quero sair = I want to leave
• quero estudar = I want to study

So quero divulgar o episódio hoje follows a very common Portuguese structure:

• querer + infinitive

In Portuguese, the subject pronoun is often omitted when the verb form already makes the subject clear.

• quero already means I want
• so eu quero and quero are both possible

In Brazilian Portuguese, leaving out eu is very normal, especially when there is no ambiguity.

So:

• Quero divulgar o episódio hoje.
• Eu quero divulgar o episódio hoje.

Both are correct. Adding eu can make it slightly more emphatic or explicit.

Divulgar usually means something like:

• to publicize
• to spread
• to promote
• to share with the public
• sometimes to announce

The exact English translation depends on context.

For example:

• divulgar um episódio = publicize/share/promote an episode
• divulgar uma notícia = spread/announce some news
• divulgar um evento = promote an event

It often suggests making something more widely known.

O is the definite article the.

So:

• o episódio = the episode

Portuguese uses definite articles more often than English does, especially with specific nouns. If you are talking about a particular episode, o episódio is very natural.

Compare:

• Quero divulgar o episódio hoje. = I want to publicize the episode today.
• Quero divulgar um episódio hoje. = I want to publicize an episode today.

So o tells us the speaker has a specific episode in mind.

Because episódio needs a written accent in Portuguese.

The accent mark shows the stressed syllable:

• e-pi-SÓ-dio

Without the accent, the spelling would be incorrect in standard Portuguese.

This accent is important for:

• correct spelling
• correct pronunciation
• identifying the stressed syllable

In Brazilian Portuguese, episódio is approximately:

• eh-pee-SOH-jee-oh

A few helpful notes:

• the stress is on só
• the di before o in Brazilian Portuguese often sounds like jee
• so -dio often sounds close to -jee-o

A rough English-friendly approximation is:

• eh-pee-SOH-jee-oh

Yes, hoje can go in different positions.

Your sentence:

• Quero divulgar o episódio hoje.

is completely natural and probably the most neutral way to say it.

But these are also possible:

• Hoje quero divulgar o episódio.
• Quero hoje divulgar o episódio. (less common/stylistically marked)
• Quero divulgar hoje o episódio. (possible, but less natural in many contexts)

In everyday Brazilian Portuguese, the most natural choices are usually:

• Quero divulgar o episódio hoje.
• Hoje quero divulgar o episódio.

Putting hoje first can give a little more emphasis to today.

Quero is the 1st person singular of querer in the present indicative.

So:

• eu quero = I want

Here is the present tense of querer:

• eu quero = I want
• você/ele/ela quer = you/he/she wants
• nós queremos = we want
• vocês/eles/elas querem = you/they want

So the sentence is in the present tense, even though it refers to an action planned for today.

Yes, and the nuance is slightly different.

• Quero divulgar o episódio hoje. = I want to publicize the episode today.
• Vou divulgar o episódio hoje. = I’m going to publicize the episode today.

So:

• quero divulgar expresses desire/intention
• vou divulgar expresses a more direct future plan

If you are simply saying what you want to do, quero divulgar is right. If you are saying what you are actually going to do, vou divulgar may fit better.

Yes. Hoje can mean:

• today in a literal time sense
• nowadays / these days depending on context

In this sentence, it clearly means today:

• Quero divulgar o episódio hoje.

Because it refers to a specific action happening on this day.

For nowadays, you usually see it in broader statements, such as:

• Hoje, muita gente trabalha de casa. = Nowadays, many people work from home.

So context tells you which meaning is intended.

Yes, it is natural.

Quero divulgar o episódio hoje. sounds like normal Brazilian Portuguese and would be understood easily.

Depending on context, native speakers might also choose slightly different verbs, for example:

• Quero publicar o episódio hoje. = I want to publish the episode today.
• Quero postar o episódio hoje. = I want to post the episode today.
• Quero promover o episódio hoje. = I want to promote the episode today.

But divulgar is a good, natural choice if the idea is making the episode known or sharing it more widely.