Aos poucos, minha mãe vai aprendendo a usar o navegador e a abrir outra aba.

Yes. Aos poucos is a very common fixed expression in Portuguese.

It means little by little, gradually, or bit by bit.

• Aos = contraction of a + os
• poucos = few or small amounts

So the literal idea is something like by small amounts, but in natural English you would usually say gradually or little by little.

Example:

• Aos poucos, ele perdeu o medo. = Little by little, he lost his fear.

Vai aprendendo shows a process that is happening gradually over time.

This structure is:

ir + gerund

In Brazilian Portuguese, this often gives the idea of:

• gradual progress
• something developing step by step
• a change that happens over time

So:

• aprende = learns / is learning in a more neutral or general way
• vai aprendendo = is gradually learning / is slowly getting the hang of it

In this sentence, vai aprendendo fits well because the idea is that the mother is learning these computer skills little by little.

Not here.

Even though vai literally comes from the verb ir (to go), vai aprendendo is not really talking about the future in the same way as she will learn.

Here, ir + gerund expresses an action unfolding progressively. It often means something like:

• is gradually learning
• keeps learning more and more
• is getting better at learning it over time

So vai does not necessarily mean will in this structure.

Because the verb aprender often takes the preposition a when followed by another verb in the infinitive.

So:

• aprender a fazer algo = to learn to do something

Examples:

• aprender a ler = to learn to read
• aprender a dirigir = to learn to drive
• aprender a usar o navegador = to learn to use the browser

In this sentence:

• aprendendo a usar o navegador
• (aprendendo) a abrir outra aba

That a is not the feminine article a here. It is a preposition.

It is repeated because both infinitives depend on the same pattern:

• aprender a usar
• aprender a abrir

So the sentence keeps the structure parallel:

• a usar o navegador
• e a abrir outra aba

This is very natural and clear.

Could it be omitted? Sometimes in connected structures, speakers may omit a repeated preposition if the meaning is still clear. But in this sentence, repeating a sounds neat and standard:

• ...a usar o navegador e a abrir outra aba.

That is the best form for learners to model.

Here o navegador means the web browser or simply the browser.

In computer-related Portuguese, navegador is the normal word for:

• Chrome
• Firefox
• Safari
• Edge

It does not mean a GPS navigator in this sentence. The context of abrir outra aba makes it clearly about internet browsing.

Outra aba means another tab.

In computer and browser vocabulary:

• aba = tab

So:

• abrir outra aba = to open another tab

This is the normal Brazilian Portuguese word for a browser tab.

Using o navegador suggests a specific or understood browser, or it can refer to the browser as the general tool she is learning to use.

Compare:

• usar o navegador = use the browser
  This sounds like the browser on the computer/phone, something specific or contextually known.

• usar um navegador = use a browser
  This would sound more indefinite, as if any browser is being referred to.

In everyday Portuguese, usar o navegador is very natural in this kind of context.

In Brazilian Portuguese, possessives like meu, minha, seu, nossa can appear with or without the definite article.

So both are possible:

• minha mãe
• a minha mãe

In Brazil, omitting the article is very common, especially in simple, natural sentences.

Both can sound correct, but there may be slight differences in style, region, or emphasis. In this sentence, minha mãe sounds completely natural.

Yes, the word order could be different, but this is the most neutral and natural order:

• Aos poucos, minha mãe vai aprendendo...

This follows a common pattern:

1. time/manner expression
2. subject
3. verb phrase

You could also hear:

• Minha mãe vai aprendendo aos poucos...

That is also correct. The meaning stays basically the same. Putting aos poucos first gives extra emphasis to the gradual nature of the learning.

Yes, but it would not mean exactly the same thing.

• está aprendendo = is learning right now / in the current period
• vai aprendendo = is gradually learning, with a sense of steady progress over time

Compare:

• Minha mãe está aprendendo a usar o navegador.
  = She is learning to use the browser.

• Minha mãe vai aprendendo a usar o navegador.
  = She is gradually learning to use the browser.

The version in your sentence fits especially well with aos poucos, because both emphasize gradual progress.

Yes, depending on context.

The structure ir + gerund can suggest:

• gradual development
• something happening step by step
• increasing familiarity or skill

So in natural English, it may be translated in different ways:

• is gradually learning
• keeps learning
• is slowly getting the hang of
• is getting better at learning how to

In this sentence, is gradually learning is probably the clearest interpretation.

It is fully natural in Brazilian Portuguese.

The vocabulary and grammar are standard, and the use of vai aprendendo feels especially natural in Brazilian speech and writing when talking about gradual progress.

Speakers in other Portuguese varieties would understand it, but since you asked about Brazilian Portuguese, this sentence fits Brazil very well.

Yes. A simpler version would be:

• Minha mãe está aprendendo a usar o navegador e a abrir outra aba.

This is easier because está aprendendo is a more straightforward progressive form.

But the original sentence is more expressive:

• Aos poucos adds little by little
• vai aprendendo adds the idea of gradual progress

So the original is slightly more advanced, but also more natural and nuanced.