यह किताब मेरे लिए बहुत ज़रूरी है।

A simple breakdown is:

• यह = this
• किताब = book
• मेरे लिए = for me
• बहुत = very
• ज़रूरी = necessary / important
• है = is

So the structure is roughly This book for me very important is.

Hindi usually puts the main verb or copula at the end of the sentence, so है comes last.

Also, Hindi uses postpositions rather than prepositions. English says for me, but Hindi says मेरे लिए, where the equivalent of for comes after the pronoun phrase.

So English:

• This book is very important for me

Hindi:

• This book for me very important is

That word order is completely normal in Hindi.

In standard Hindi:

• यह = this (singular)
• ये = these (plural)

So यह किताब is the standard written form for this book.

However, in everyday speech, many speakers say ये किताब even when they mean singular this book. So:

• यह किताब = standard, especially in writing
• ये किताब = very common in speech

Hindi does not have articles like English a, an, and the.

Instead, Hindi relies on context or words like यह (this) and वह (that).

So:

• यह किताब = this book
• किताब by itself could mean a book or the book, depending on context

Because लिए is part of a for phrase, and Hindi uses a special form of the pronoun before it.

So:

• मेरे लिए = for me
• not मैं लिए
• not मुझे लिए

And मेरा means my, not for me.

A good way to learn it is as a chunk:

• मेरे लिए = for me
• तुम्हारे लिए = for you
• उसके लिए = for him/her
• हमारे लिए = for us

No. It must be मेरे लिए.

Here, मेरे does not agree with किताब. It is part of the fixed pronoun phrase मेरे लिए, meaning for me.

So even though किताब is feminine, you still say:

• मेरे लिए
• not मेरी लिए

Yes, it is the same basic idea: for.

With regular nouns, you usually see के लिए:

• राम के लिए = for Ram
• बच्चों के लिए = for the children

With pronoun-based forms, you commonly get:

• मेरे लिए = for me
• तुम्हारे लिए = for you
• उसके लिए = for him/her

So it is best to learn X के लिए / मेरे लिए as the normal pattern for for X.

Because ज़रूरी is an indeclinable adjective in modern Hindi. That means it usually does not change for gender or number.

So you get:

• किताब ज़रूरी है
• काम ज़रूरी है
• किताबें ज़रूरी हैं

The noun changes when needed, and the verb may change, but ज़रूरी stays the same.

बहुत means very here. It is modifying the adjective ज़रूरी.

So:

• ज़रूरी = important / necessary
• बहुत ज़रूरी = very important / very necessary

In Hindi, words like बहुत usually come before the adjective or adverb they modify.

है is the present-tense form of to be for singular subjects in sentences like this.

Hindi normally places it at the end:

• यह किताब मेरे लिए बहुत ज़रूरी है।

In standard, complete Hindi, you should keep है. Leaving it out may happen in:

• casual speech
• headings
• slogans
• poetry

But for normal learner Hindi, include it.

If you mean These books are very important for me, you would say:

• ये किताबें मेरे लिए बहुत ज़रूरी हैं।

Changes:

• यह → ये
• किताब → किताबें
• है → हैं

But ज़रूरी stays the same.

You just change the pronoun phrase:

• यह किताब मेरे लिए बहुत ज़रूरी है। = for me
• यह किताब तुम्हारे लिए बहुत ज़रूरी है। = for you
• यह किताब आपके लिए बहुत ज़रूरी है। = for you (polite)
• यह किताब उसके लिए बहुत ज़रूरी है। = for him/her

The rest of the sentence stays the same.

The dot under ज़ is called a nukta. It changes the sound of the letter.

• ज sounds like j
• ज़ sounds like z

So ज़रूरी is pronounced with a z sound at the beginning, roughly zaroori.

That said, in everyday speech, many Hindi speakers do not keep a strong distinction between ज and ज़, so you may hear slightly different pronunciations.