A támogató már itt van.

A is the definite article in Hungarian, equivalent to the in English.

• a is used before words that begin with a consonant sound
• az is used before words that begin with a vowel sound

So:

• a támogató = the supporter

It does not mean a/an here. The indefinite article in Hungarian is egy.

Támogató means supporter, backer, or sometimes sponsor, depending on context.

It comes from the verb támogat = to support.
The ending -ó can form a noun meaning the person who does the action.

So very literally:

• támogat = support
• támogató = supporting person / supporter

In real usage, you just learn támogató as a normal noun.

Már usually means already.

So:

• A támogató itt van. = The supporter is here.
• A támogató már itt van. = The supporter is already here.

It adds the idea that the person has arrived sooner than expected, or that their presence is now a fact.

Depending on context, már can also sometimes feel like now by this point.

Yes. Itt van literally means is here.

• itt = here
• van = is

So the sentence structure is very natural in Hungarian:

• A támogató már itt van.
• literally: The supporter already here is.

In idiomatic English, we simply say The supporter is already here.

Great question. Hungarian often omits van in simple equational sentences in the third person singular:

• Ő tanár. = He/She is a teacher.
• A ház nagy. = The house is big.

But van is normally kept when talking about existence or location:

• Péter itt van. = Peter is here.
• A könyv az asztalon van. = The book is on the table.

So in A támogató már itt van, van is required because the sentence tells us where the supporter is.

Yes, Hungarian word order is flexible, and different orders change the focus or emphasis.

A támogató már itt van is a neutral, natural sentence meaning:

• The supporter is already here.

Other possible orders include:

• Már itt van a támogató.
  = The supporter is already here.
  This can sound a bit more like announcing the fact.

• Itt van már a támogató.
  = also possible, often with conversational emphasis

Hungarian word order is strongly connected to information structure: what is already known, what is new, and what is being emphasized.

Not as the normal way to say this.

While Hungarian word order is flexible, it is not random.
A támogató már itt van and Már itt van a támogató are natural.
A támogató van már itt sounds unusual in most contexts.

A learner should usually stick to:

• A támogató már itt van.
• Már itt van a támogató.

until they get more comfortable with Hungarian focus patterns.

No. They are related, but they mean different things.

• itt = here (location)
• ide = to here / hereward (direction toward the speaker)

Examples:

• Itt van. = He/She is here.
• Ide jön. = He/She is coming here.

So in your sentence, itt is correct because it describes where the supporter is, not movement.

A simple English-friendly approximation is:

TAA-mo-gaa-too

A few important points:

• á is a long a, somewhat like a in father
• ó is a long o
• Hungarian stress is always on the first syllable

So the stress is:

TÁ-mo-ga-tó

Also, Hungarian spelling is very regular, so accented vowels are important and should not be ignored.

Not necessarily in the real world, but grammatically a támogató means the supporter, referring to a specific one that speaker and listener can identify from context.

If you wanted a supporter in the indefinite sense, you would say:

• Egy támogató már itt van. = A supporter is already here.

So the article tells you whether the noun is being treated as specific/known or not.

Yes, depending on context.

It often refers to a person or group that supports something, but it can also mean:

• backer
• sponsor
• supporting organization

So A támogató már itt van usually sounds like a person is here, but the exact sense depends on the situation.

Then you would use the plural:

• A támogatók már itt vannak. = The supporters are already here.

Changes:

• támogató → támogatók = supporters
• van → vannak = are

So Hungarian does mark plural both on the noun and on the verb in this kind of sentence.