Me gusta hojear libros en la biblioteca.

Because gustar works differently from to like in English.

In Spanish, gustar literally works more like to be pleasing to. So:

• Me gusta hojear libros = Browsing books is pleasing to me
• me = to me
• gusta = is pleasing

So you are not grammatically the subject in the same way as in English. That is why yo gusto does not mean I like. In fact, yo gusto would mean something more like I am pleasing / I am liked, depending on context.

Good question. The verb agrees with what comes after gustar as the grammatical subject.

Here, the full thing being liked is:

• hojear libros = to browse books / browsing books

An infinitive phrase like hojear libros counts as singular, so you use gusta.

Compare:

• Me gusta hojear libros. = I like browsing books.
• Me gustan los libros. = I like books.

In the second sentence, los libros is plural, so you use gustan.

Hojear means to leaf through, to flip through, or to browse pages quickly, without necessarily reading everything carefully.

So in this sentence, it suggests casually looking through books in the library.

It is different from:

• leer = to read
• estudiar = to study

So:

• Me gusta hojear libros = I like browsing/leafing through books
• Me gusta leer libros = I like reading books

Because Spanish often leaves out the article when talking about things in a general sense after some verbs or infinitives.

Here, hojear libros means to browse books in general, not specific books.

Compare:

• Me gusta hojear libros. = I like browsing books.
• Me gusta hojear los libros de historia. = I like browsing the history books.

Adding los would make it sound more specific.

Me is an indirect object pronoun meaning to me.

With gustar, Spanish usually uses these pronouns:

• me = to me
• te = to you
• le = to him/her/you(formal)
• nos = to us
• os = to you all (Spain)
• les = to them/you all

So:

• Me gusta = it pleases me / I like it
• Te gusta = you like it
• Nos gusta = we like it

Yes. That is completely correct.

• Me gusta hojear libros en la biblioteca is the normal, simple version.
• A mí me gusta hojear libros en la biblioteca adds emphasis or contrast.

For example:

• A mí me gusta hojear libros, pero a mi hermano le gusta leerlos de principio a fin.

The a mí is optional here because me already tells you who likes it.

It can often correspond to either in the library or at the library in English, depending on context.

Literally, en means in here, but Spanish en is broader than English in and often covers places where English might use in or at.

So:

• en la biblioteca = in the library / at the library

In this sentence, the natural idea is that the browsing happens there.

Spanish often uses the definite article with places more readily than English does.

So en la biblioteca is the normal way to say in/at the library.

English often says:

• at school
• at church
• at home

But Spanish usually keeps the article in many similar expressions:

• en la biblioteca
• en la escuela (depending on region and context)
• en la iglesia

So this is very normal Spanish usage.

No. In standard Spanish, h is silent.

So hojear is pronounced roughly like ojear, though be careful: those are actually two different verbs.

• hojear = to leaf through pages
• ojear = to glance at / scan / cast an eye over

They sound the same in most accents, but they are spelled differently and can mean different things.

Yes, but the meaning changes.

• Me gusta hojear libros en la biblioteca. = I like browsing/leafing through books in the library.
• Me gusta leer libros en la biblioteca. = I like reading books in the library.

Hojear suggests a lighter, quicker action. Leer suggests actual reading.

The grammatical subject is:

• hojear libros

That whole infinitive phrase functions like browsing books in English.

So the structure is roughly:

• Me = to me
• gusta = is pleasing
• hojear libros en la biblioteca = browsing books in the library

This is why gusta is singular: the subject is the infinitive idea, not libros by itself.

Yes, Spanish allows some flexibility, although the original sentence is the most neutral and natural.

Possible versions include:

• Me gusta hojear libros en la biblioteca.
• En la biblioteca me gusta hojear libros.

The second version puts more focus on en la biblioteca.

You could also hear:

• A mí me gusta hojear libros en la biblioteca.

But for a learner, the original word order is the safest default.

Yes, it sounds natural.

In Spain, hojear is a normal verb for flipping through books or magazines, and biblioteca is the standard word for library.

A native speaker might also say similar things like:

• Me gusta mirar libros en la biblioteca.
• Me gusta ojear libros en la biblioteca.
• Me gusta pasar el rato hojeando libros en la biblioteca.

But your sentence is perfectly good, clear, and natural.