Eu vou aproveitar o desconto para comprar o computador.

Yes. In Brazilian Portuguese, you can often omit the subject pronoun because the verb usually shows who the subject is.

So both of these are natural:

• Eu vou aproveitar o desconto para comprar o computador.
• Vou aproveitar o desconto para comprar o computador.

Including eu can add emphasis, contrast, or clarity. In everyday speech, leaving it out is very common.

Vou aproveitar is the very common near future structure in Portuguese:

• vou = I go / I am going
• aproveitar = infinitive, to take advantage of / to make use of

Together, vou aproveitar means I’m going to take advantage of.

This is the normal conversational way to talk about the future in Brazilian Portuguese, much like going to in English.

Here, aproveitar means to take advantage of, to make good use of, or to make the most of.

So aproveitar o desconto means:

• take advantage of the discount
• make use of the discount

It does not mean something negative here. It is a very common and useful verb in Portuguese.

Examples:

• Vou aproveitar a oportunidade. = I’m going to take advantage of the opportunity.
• Aproveita o tempo livre. = Make the most of your free time.

Portuguese uses definite articles much more often than English.

So o desconto literally means the discount, but in natural English we might simply say the discount or even just understand it as a discount depending on context.

In Portuguese, using the article here sounds normal and expected:

• aproveitar o desconto

Leaving out the article would usually sound incomplete or unnatural in this sentence.

Para here shows purpose: in order to / to.

So:

• aproveitar o desconto para comprar o computador
• take advantage of the discount to buy the computer
• more naturally in English: take advantage of the discount in order to buy the computer

This structure is very common:

• Estudo para aprender. = I study to learn.
• Economizei dinheiro para viajar. = I saved money to travel.

Yes. In spoken Brazilian Portuguese, pra is extremely common and natural.

So these both work:

• Eu vou aproveitar o desconto para comprar o computador.
• Eu vou aproveitar o desconto pra comprar o computador.

Para is the full form and is more common in careful speech and writing. Pra is more informal and very common in conversation.

That changes the meaning slightly.

• o computador = the computer
• um computador = a computer

So comprar o computador suggests a specific computer, one that is already known in the conversation or context.

Examples:

• Vou comprar o computador. = I’m going to buy the computer.
  → a specific one
• Vou comprar um computador. = I’m going to buy a computer.
  → any computer / not specified

Because para is followed by the verb comprar, not by a noun with an article.

Contractions like these happen when para is followed by an article:

• para + o = pro
• para + a = pra or sometimes para a in more careful speech/writing

But here you have:

• para comprar

Since comprar is a verb, there is no article to contract with.

Compare:

• Vou ao mercado para comprar pão. = no contraction with comprar
• Este presente é para o João. = often pro João

Yes. You could say:

• Eu aproveitarei o desconto para comprar o computador.

This is grammatically correct, but in Brazilian Portuguese it sounds more formal, less conversational, and sometimes a bit stiff in everyday speech.

Most people would naturally say:

• Eu vou aproveitar o desconto...

So for normal conversation, ir + infinitive is usually the better choice.

Yes, that is perfectly natural:

• Vou aproveitar o desconto para comprar o computador.

This is probably the most common everyday version.

The basic order is:

• subject (optional)
• vou
• infinitive
• object
• purpose phrase

You can move things around for emphasis in some cases, but the original word order is very standard and natural.

Mostly desconto means discount: a reduced price.

So aproveitar o desconto means you are taking advantage of a lower price.

If you want to talk about a sale event, Portuguese often uses:

• promoção
• liquidação

Examples:

• Tem desconto de 20%. = There is a 20% discount.
• A loja está em promoção. = The store is having a sale / promotion.

So in your sentence, desconto is best understood as discount.

A very natural spoken version would be:

• Vou aproveitar o desconto pra comprar o computador.

That version sounds relaxed and everyday:

• no eu
• pra instead of para

The original sentence is also completely correct, just a little more full and neutral in style.

A rough pronunciation guide would be:

eh-ooh voh ah-proh-vay-TAHR oo deh-SKON-too pah-rah kohm-PRAHR oo koom-poo-tah-DOHR

A few helpful notes:

• vou sounds roughly like voh with a glide
• desconto has stress on -con-
• comprar has stress on the last syllable
• computador in Brazilian Portuguese has stress on the last syllable: -dor

In fast speech, you may hear something closer to:

Vô aproveitá o desconto pra comprá o computadô.

That reflects casual pronunciation, not formal spelling.