Quero divulgar o podcast hoje.

Because after querer (to want), Portuguese normally uses an infinitive for the next verb.

• quero = I want
• divulgar = to promote / to publicize / to spread the word about

So:

• Quero divulgar o podcast hoje. = I want to promote the podcast today.

Using divulgo here would be wrong, because divulgo means I promote / I publicize, and Portuguese does not use that form after quero.

A few similar examples:

• Quero estudar. = I want to study.
• Quero sair. = I want to go out.
• Quero comprar um livro. = I want to buy a book.

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

• Quero already tells you the subject is I
• So (Eu) quero divulgar o podcast hoje and Quero divulgar o podcast hoje both mean the same thing

Portuguese does this much more often than English. Including eu is possible, but it usually adds emphasis, contrast, or clarity.

For example:

• Quero divulgar o podcast hoje. = neutral
• Eu quero divulgar o podcast hoje. = slightly more emphatic, like I want to promote it

Divulgar usually means to publicize, promote, spread, or make something known.

In this sentence, it most naturally means something like:

• promote the podcast
• spread the word about the podcast
• publicize the podcast

It does not usually mean publish in the sense of releasing something for the first time. If you mean publish / release an episode, verbs like publicar or lançar might be more appropriate, depending on context.

So:

• divulgar o podcast = promote the podcast
• publicar o podcast / o episódio = publish the podcast / episode
• lançar o episódio = release the episode

Portuguese often uses definite articles more than English does.

So o podcast literally looks like the podcast, even in places where English might simply say the podcast or sometimes just refer to it more loosely.

Here, o podcast is completely natural because you are talking about a specific podcast already understood in the conversation.

Also, podcast is treated as a masculine noun in Brazilian Portuguese, so the article is o.

• o podcast
• um podcast

This is common with many borrowed words: they get assigned a grammatical gender.

Yes. Portuguese word order is fairly flexible, especially with time expressions like hoje (today).

All of these are natural:

• Quero divulgar o podcast hoje.
• Hoje quero divulgar o podcast.
• Quero hoje divulgar o podcast. (possible, but less common and a bit more marked)

The most neutral version here is probably:

• Quero divulgar o podcast hoje.

If you start with Hoje, it gives a little more emphasis to today:

• Hoje quero divulgar o podcast. = Today I want to promote the podcast.

Yes, podcast is very commonly used in Brazilian Portuguese. It is a borrowed English word, but it is fully normal in everyday speech.

People commonly say:

• ouvir um podcast = listen to a podcast
• gravar um podcast = record a podcast
• divulgar o podcast = promote the podcast

There is no more common native Brazilian Portuguese replacement that people normally use instead.

A broad Brazilian pronunciation would be roughly:

• quero → KEH-roo
• divulgar → jee-vool-GAR or djee-vool-GAR
• o → often sounds like oo
• podcast → often close to POD-kas-tchi or POD-kast
• hoje → OH-zhee

A rough full pronunciation guide could be:

KEH-roo djee-vool-GAR oo POD-kas-tchi OH-zhee

A few useful notes:

• In Brazilian Portuguese, unstressed o at the end of a word often sounds like oo
• j in hoje sounds like the s in measure
• The r in divulgar at the end is often a soft breathy sound in many Brazilian accents

Pronunciation varies by region, especially with words like podcast.

They are close, but not the same.

• Quero divulgar o podcast hoje. = I want to promote the podcast today.
• Vou divulgar o podcast hoje. = I’m going to promote the podcast today.

Quero expresses desire / intention.
Vou expresses a more concrete future plan.

So:

• Quero divulgar = I want to do it
• Vou divulgar = I’m going to do it

Sometimes quero can imply intention too, but its core meaning is still want.

Yes, you could, and it would sound natural.

Both divulgar and promover can work, but they are not always identical.

• divulgar = spread the word, publicize, make known
• promover = promote, support, boost

For a podcast, divulgar is very common because it focuses on getting people to know about it. Promover can sound a little more like active promotion or marketing.

So:

• Quero divulgar o podcast hoje. = I want to publicize / spread the word about the podcast today.
• Quero promover o podcast hoje. = I want to promote the podcast today.

Both are good, but divulgar is especially idiomatic here.

Its basic meaning is today, but in some contexts it can also mean nowadays / these days.

In this sentence, though, it clearly means today:

• Quero divulgar o podcast hoje. = I want to promote the podcast today.

Compare:

• Hoje vou ao mercado. = Today I’m going to the market.
• Hoje em dia, muita gente ouve podcast. = Nowadays, a lot of people listen to podcasts.

So the meaning depends on context, but here it is definitely the calendar-day meaning.

It is neutral and works well in both everyday conversation and standard written Portuguese.

• Not especially formal
• Not slangy
• Very natural in Brazilian Portuguese

You could use it in speech, in a message, or even in a work context if you are talking casually about your plans.

For example:

• Quero divulgar o podcast hoje nas redes sociais.
• Quero divulgar o podcast hoje à tarde.

So it is a very safe, normal sentence pattern to learn.