He elegido una novela fácil en español para leer en la biblioteca.

No. Here he does not mean the English pronoun he.

In He elegido, he is the 1st person singular form of the verb haber, used as an auxiliary verb to make the present perfect:

• he = I have
• elegido = chosen

So He elegido means I have chosen.

This is a very common point of confusion for English speakers because Spanish he and English he look the same but mean completely different things here.

Spanish often omits subject pronouns when the verb already makes the subject clear.

• He elegido already tells you the subject is yo because he is the yo form.
• So Yo he elegido is possible, but usually unnecessary.

You would include yo only for emphasis, contrast, or clarity, for example:

• Yo he elegido una novela fácil, no tú.

In a normal sentence, dropping yo sounds natural.

Both are possible forms, but they do not always sound the same, especially in Spain.

• he elegido = present perfect
• elegí = preterite / simple past

In Spain, the present perfect is very commonly used for actions in the recent past or actions connected to the present moment.

So He elegido una novela fácil... can suggest:

• I’ve chosen a simple novel...
• the choice is recent
• the result matters now

In many parts of Latin America, people would more often use elegí in the same situation.

So this sentence is very natural for Spanish from Spain.

Elegido is the past participle of elegir.

• elegir = to choose
• elegido = chosen

In compound tenses, Spanish uses:

• haber
  • past participle

So:

• he elegido = I have chosen
• has elegido = you have chosen
• ha elegido = he/she has chosen

Even though elegir is irregular in some forms, its past participle is regular:

• elegido, not something irregular

Because novela is a singular feminine noun.

That means it takes:

• una = a / one, feminine singular

Compare:

• un libro
• una novela

So the article has to agree with the noun:

• novela → feminine
• una → feminine singular

In Spanish, adjectives often come after the noun, especially when they simply describe it.

So:

• una novela fácil = a simple/easy novel

That is the most normal order here.

If you put the adjective before the noun, it can sound more literary, emphatic, or less neutral. For a learner, the safest pattern is:

• noun + adjective

So una novela fácil is exactly what you would expect.

Because fácil is an adjective that does not change for masculine/feminine in the singular.

So you get:

• un libro fácil
• una novela fácil

It only changes in the plural:

• libros fáciles
• novelas fáciles

Many Spanish adjectives ending in a consonant behave like this.

The most natural interpretation is that it describes novela:

• una novela fácil en español = an easy novel in Spanish

So it usually means the novel is written in Spanish.

However, structurally, a learner may feel some ambiguity because en español can also be understood more broadly in context. If you wanted to make it even clearer that the novel is in Spanish, you could say things like:

• una novela fácil escrita en español
• una novela fácil en español

In normal usage, though, the original sentence is fine and people will usually understand that en español refers to the novel.

Because when naming a language after en, Spanish normally does not use an article.

So:

• en español = in Spanish
• en inglés = in English
• en francés = in French

Using an article here would sound wrong in this sentence.

Para + infinitive often expresses purpose.

So:

• para leer = to read / for reading

In this sentence, it explains why the speaker chose the novel:

• He elegido una novela fácil en español para leer...
• I’ve chosen an easy novel in Spanish to read...

This is a very common structure in Spanish:

• para estudiar
• para comer
• para practicar
• para leer

The most natural reading is that it goes with leer:

• para leer en la biblioteca
• to read in the library

So the idea is that the speaker chose the novel in order to read it in the library.

A learner might notice that word order can sometimes create small ambiguities in Spanish. If you wanted to make other meanings clearer, you could rephrase:

• He elegido en la biblioteca una novela fácil... = I chose it in the library
• He elegido una novela fácil de la biblioteca... = I chose a simple novel from the library

But in the original sentence, most people will understand en la biblioteca with leer.

Because en la biblioteca means in the library, referring to location.

• en la biblioteca = in the library
• de la biblioteca = from the library / belonging to the library

So:

• leer en la biblioteca = to read in the library
• una novela de la biblioteca = a novel from the library

The sentence is talking about where the reading happens, not where the novel comes from.

Both can work depending on context.

• una novela fácil often means an easy novel
• It can also feel like a simple novel

For language learners, easy is usually the most natural translation here, because it suggests the book is not difficult to read.

Yes, you could also use escoger.

• He elegido...
• He escogido...

Both mean I have chosen...

In many contexts they are very close in meaning. Elegir is extremely common and sounds perfectly natural here. A learner should feel comfortable using elegir first.

Yes, it sounds natural.

A few especially natural features for Spain are:

• He elegido instead of elegí in a present-relevant context
• omission of yo
• para + infinitive for purpose
• en español without an article

So this is a good model sentence for Spanish as used in Spain.