O baralho está pronto para quem começa.

Here, baralho means deck of cards.

In Brazilian Portuguese, baralho can sometimes refer more generally to playing cards, but in this sentence it most naturally means the actual deck being used in the game.

Portuguese often uses the definite article where English might leave it out.

So o baralho means the deck. It sounds natural when both speaker and listener already know which deck is being talked about.

In English, depending on context, you might say either the deck is ready or just deck ready in a very compressed style, but Portuguese strongly prefers o baralho here.

Because ready is treated as a state or condition, not a permanent characteristic.

• estar = to be, in a temporary state or condition
• ser = to be, in an essential or defining sense

So:

• O baralho está pronto = The deck is ready
• O baralho é pronto would sound unnatural here

This is a very common pattern in Portuguese: use estar with conditions like ready, open, closed, busy, tired, and so on.

Because adjectives in Portuguese agree with the noun they describe.

Baralho is:

• masculine
• singular

So the adjective must also be:

• masculine
• singular

That gives pronto.

If the noun changed, the adjective would change too:

• A carta está pronta
• Os baralhos estão prontos
• As cartas estão prontas

Word by word, it is:

• para = for
• quem = who / whoever / the person who
• começa = starts / is starting

So a literal gloss would be for who starts, but natural English would be:

• for whoever starts
• for the person who starts
• for the starting player

In context, it refers to the person whose turn it is to begin.

Because quem normally takes a verb in the third person singular.

So Portuguese says:

• quem começa not
• quem começam

This is standard even when quem refers to an unknown person or to whoever.

Yes. It is the present indicative, and Portuguese often uses the present tense for:

• general truths
• instructions
• rules
• near-future situations

In a game context, quem começa can mean something like:

• who starts
• who is starting
• who will start

This is very normal. English does something similar in sentences like Who starts?

Because para começar means something different.

• para quem começa = for the person who starts
• para começar = to start / in order to start / for starters

So para começar does not identify a person. It uses the infinitive começar, while quem começa refers to who is doing the action.

Yes.

Depending on context, quem can be understood as:

• who
• whoever
• the person who

In this sentence, English usually needs a slightly fuller translation, so whoever starts or the one who starts often works better than just who starts.

Very often, yes.

In everyday Brazilian Portuguese, you may hear:

• O baralho tá pronto pra quem começa.

That is just a more informal spoken version of:

• O baralho está pronto para quem começa.

Changes:

• está → tá
• para → pra

The meaning stays the same. The original sentence is the more neutral, standard written form.

Yes, though the original order is the most neutral.

For example:

• Para quem começa, o baralho está pronto.

This is still grammatical, but it puts more emphasis on para quem começa.

The original sentence:

• O baralho está pronto para quem começa.

is the straightforward, neutral way to say it.