Ich will mein Buch wieder.

In German, ich will comes from the verb wollen, which means to want.

So:

• ich will = I want
• not I will in the English future sense

This is a very common false friend for English speakers. German usually does not use wollen to form the future. If you want to talk about the future in German, you often just use the present tense:

• Ich gehe morgen nach Hause. = I’m going home tomorrow.

So in Ich will mein Buch wieder, will clearly means want.

Because Buch is a neuter noun: das Buch.

The sentence uses Buch as the direct object, so it is in the accusative case. In the accusative:

• masculine: meinen
• feminine: meine
• neuter: mein
• plural: meine

So:

• das Buch → mein Buch
• not meinen Buch

A useful comparison:

• Ich will meinen Stift wieder. → Stift is masculine
• Ich will mein Buch wieder. → Buch is neuter

Here wieder means back.

So Ich will mein Buch wieder means I want my book back.

This can be confusing because wieder very often means again:

• Ich lese das Buch wieder. = I’m reading the book again.

But in some contexts, especially when talking about getting something returned, wieder can be understood as back:

• Ich will mein Geld wieder. = I want my money back.
• Ich habe mein Buch wieder. = I have my book back.

So the exact meaning depends on context.

German adverbs often appear later in the sentence, and this position is very natural here.

The basic structure is:

• Ich = subject
• will = verb
• mein Buch = object
• wieder = adverb

So:

• Ich will mein Buch wieder.

This is a normal word order. Putting wieder at the end makes it sound like the thing the speaker wants is the book back.

You may also hear other word orders for emphasis, but this version is straightforward and natural.

Yes. Ich will mein Buch zurück is also very natural, and many learners first meet zurück for back in this kind of sentence.

Both can work:

• Ich will mein Buch wieder.
• Ich will mein Buch zurück.

In many situations, zurück feels a bit more explicitly like back/returned, while wieder can also mean again, so zurück may be clearer for learners.

For example:

• Gib mir mein Buch zurück. = Give me my book back.

So if you want the least ambiguous option, zurück is often a good choice.

It is understandable and natural, but ich will can sound quite strong or demanding, depending on tone and context.

German wollen is often firmer than English want. If you want to sound more polite, you might say:

• Ich möchte mein Buch wiederhaben. = I would like to have my book back.
• Ich hätte gern mein Buch zurück. = I’d like my book back.

So:

• Ich will mein Buch wieder. = direct, strong
• Ich möchte ... = more polite

The original sentence is fine if the speaker is upset, insistent, or speaking very directly.

Because wollen can be used directly with a noun object.

So:

• Ich will mein Buch. = I want my book.

This is complete by itself.

German also allows a longer version with another verb:

• Ich will mein Buch wiederhaben.

Here wiederhaben means to have back. That version is very common too.

So both patterns are possible:

• Ich will mein Buch wieder.
• Ich will mein Buch wiederhaben.

The shorter sentence is not missing anything; it is a valid complete sentence.

A simple pronunciation guide is:

Ich will mein Buch wieder
ikh vil mine book VEE-der

A few notes:

• ich has the soft ch sound, not a hard k
• will sounds a bit like English vill
• mein rhymes roughly with English mine
• Buch has a long u sound, like bookh but with a final German ch
• wieder begins with a v sound, because German w is pronounced like English v

A more careful rough guide:

• ich = ikh / iç
• wieder = VEE-der

In theory, wieder can mean again, so a learner might wonder that. But in this sentence, the natural meaning is back.

That is because want my book again is not the most likely interpretation in normal context, while want my book back is very natural.

Still, if you want to avoid any possible ambiguity, zurück or wiederhaben makes the meaning clearer:

• Ich will mein Buch zurück.
• Ich will mein Buch wiederhaben.

Those clearly mean I want my book back.