Skráningin byrjar núna.

Skráning is the noun registration.

The ending -in is the definite article, so skráningin means the registration.

In Icelandic, the word the is usually attached to the end of the noun rather than written as a separate word.

• skráning = registration
• skráningin = the registration

Byrjar is a verb form from byrja, which means to begin or to start.

In this sentence, byrjar means begins / starts.

Because byrjar is the present tense, 3rd person singular form of the verb.

The subject skráningin is singular, so the verb must also be singular.

• að byrja = to begin / to start
• ég byrja = I begin
• þú byrjar = you begin
• hann/hún/það byrjar = he/she/it begins

Since skráningin is treated like it, Icelandic uses byrjar.

Núna means now.

It is very close in meaning to nú, and in many cases they can both be translated as now.
Very roughly:

• nú can sound a little shorter or more neutral
• núna can feel a bit more like right now / at this moment

In everyday speech, both are common.

The sentence has a very straightforward order:

Skráningin + byrjar + núna
subject + verb + adverb

So it matches normal English word order quite closely: The registration starts now.

Yes, Icelandic often allows some flexibility with adverbs.

For example, Núna byrjar skráningin is also possible. That version puts more focus on now.

But Skráningin byrjar núna is a very natural neutral sentence.

Skráning is a feminine noun.

Yes, gender matters in Icelandic because it affects things like:

• the form of the definite article
• adjective agreement
• some pronouns and other grammar patterns

Here, the definite form skráningin reflects that feminine noun pattern.

It is in the nominative case, because it is the subject of the sentence.

In other words, the registration is the thing doing the action of starting.

Because Icelandic usually expresses the by adding an ending to the noun.

So instead of a separate word like English the registration, Icelandic often says:

• skráningin = the registration

This attached article is one of the first big differences English speakers notice in Icelandic.

A rough learner-friendly guide might be:

• Skráningin ≈ SKRAU-ning-in
• byrjar ≈ BIR-yar
• núna ≈ NOO-na

A few notes:

• á is pronounced like ow in cow, but longer
• ú is like a long oo
• j in Icelandic is pronounced like English y
• the r is usually trilled or tapped

This is only an approximation, but it helps get you started.

Yes. Hefst is another common way to say begins / starts.

So:

• Skráningin byrjar núna
• Skráningin hefst núna

Both are natural, though hefjast / hefst can sound a little more formal in some contexts.

Here it is used intransitively.

That means the subject simply begins, and there is no direct object:

• Skráningin byrjar núna = The registration starts now

But byrja can also appear in structures involving another action, depending on context.

No, not normally.

Skráningin is capitalized here only because it is the first word of the sentence.

Like English, ordinary nouns such as registration are not capitalized unless they start a sentence or are part of a name.