Begynderen er klar.

Because Danish often puts the definite article on the end of the noun.

• en begynder = a beginner
• begynderen = the beginner

So the ending -en here means the. This is very common in Danish:

• en bog → bogen = the book
• en lærer → læreren = the teacher

Since begynder is a common-gender noun, its definite singular form takes -en.

The base form is en begynder, meaning a beginner.

The sentence uses the definite singular form:

• en begynder = a beginner
• begynderen = the beginner

So Begynderen er klar is built from:

• begynderen = the beginner
• er = is
• klar = ready

Because Danish forms the definite singular of many common-gender nouns by adding -en.

Here the pattern is:

• begynder → begynderen

This may look slightly unusual because the noun already ends in -er, but the definite ending is still added after it.

Other similar examples:

• lærer → læreren
• cykelrytter → cykelrytteren

So begynderen is just the regular definite form.

Er means is.

It is the present tense of at være = to be.

Some useful forms are:

• jeg er = I am
• du er = you are
• han/hun er = he/she is
• vi er = we are

So in Begynderen er klar, er simply links the subject with the adjective, just like English is.

This is the normal Danish word order for a simple statement:

subject + verb + complement

So:

• Begynderen = subject
• er = verb
• klar = adjective/complement

This is very similar to English:

• The beginner is ready

Danish main clauses usually put the finite verb in second position, and in a basic sentence like this, that gives you the same order as English.

Because begynderen is a singular common-gender noun, and predicative adjectives match that.

Here are the main patterns with klar:

• common gender singular: klar
• neuter singular: klart
• plural: klare

Examples:

• Begynderen er klar = The beginner is ready
• Barnet er klart = The child/thing is ready
• Børnene er klare = The children are ready

So klar is the correct form for begynderen.

It can mean a few related things, depending on context.

Common meanings include:

• ready
• finished
• clear

Examples:

• Jeg er klar. = I am ready.
• Er du klar? = Are you ready?
• Det er klart. = That is clear / Of course.

In Begynderen er klar, the natural meaning is ready.

A rough guide for an English speaker is:

• Begynderen ≈ beh-GUN-duh-run
• er ≈ a very short air or often almost just a weak vowel sound in fast speech
• klar ≈ klahr

A few important pronunciation points:

• The y in begynder is not like English y. It is a rounded front vowel, which many English speakers find difficult.
• The d in begynderen is often softer than an English d.
• Danish r is usually pronounced in the throat, not like a strong English r.

If you want to sound natural, listen to native audio, because Danish pronunciation is often less direct than the spelling suggests.

Yes, but it means something different.

• Begynderen er klar = The beginner is ready
• En begynder er klar = A beginner is ready

So the difference is definiteness:

• en begynder = a beginner
• begynderen = the beginner

Both are grammatically correct, but they do not mean exactly the same thing.

Not exactly.

• begynder = beginner
• nybegynder = complete beginner / absolute beginner / someone new at it

So nybegynder is often more specific. It emphasizes that the person is newly starting.

Examples:

• Han er begynder i dansk. = He is a beginner in Danish.
• Hun er nybegynder. = She is a complete beginner.

In your sentence, begynderen is perfectly normal and neutral.

It is capitalized because it is the first word of the sentence.

In modern Danish, nouns are not generally capitalized the way they are in German.

So:

• Begynderen er klar. = capitalized because it starts the sentence
• Jeg ser begynderen. = not capitalized in the middle of a sentence

That is the normal rule.