No conozco el camino a la biblioteca.

No is simply the Spanish word for not, and in Spanish it normally goes directly before the verb:

• No conozco = I do not know / I’m not familiar with

You do not add a separate word like do in English. Spanish just uses no + verb.

As for no sé, that is also possible in some contexts, but conocer and saber are not used in exactly the same way:

• saber = to know a fact, piece of information, or how to do something
• conocer = to be familiar with, to know a person/place/thing

Here, el camino is more like a route you are familiar with, so no conozco el camino sounds natural.

Because conocer is an irregular verb in the yo form of the present tense.

The infinitive is conocer. In most present-tense forms it behaves normally:

• conoces
• conoce
• conocemos
• conocéis
• conocen

But the yo form is:

• conozco

This -zco pattern is common in some verbs ending in -cer or -cir, especially in the yo form.

This is one of the most common questions for English speakers because both can mean to know.

A useful basic rule:

• Use saber for facts, information, or learned skills.
• Use conocer for familiarity with people, places, or things.

Examples:

• Sé dónde está la biblioteca. = I know where the library is.
• Conozco la biblioteca. = I know the library / I’m familiar with the library.
• No conozco el camino a la biblioteca. = I don’t know the way to the library / I’m not familiar with the route to the library.

So in your sentence, the speaker is talking about being unfamiliar with the route.

Because Spanish usually drops subject pronouns when they are not needed.

The verb conozco already tells you the subject is I:

• conozco = I know
• conoces = you know

So No conozco el camino a la biblioteca already clearly means I don’t know the way to the library.

You can say Yo no conozco el camino a la biblioteca, but adding yo usually gives extra emphasis, contrast, or clarity.

Spanish often uses the definite article el / la / los / las where English might not.

So:

• el camino = the way / the route / the path

In this sentence, el camino refers to the specific route to the library, so the article sounds natural.

English often says I don’t know the way, and Spanish does the same here:

• No conozco el camino...

The phrase a la biblioteca means to the library.

Here:

• a = to
• la biblioteca = the library

So:

• el camino a la biblioteca = the way to the library

This is a very common structure in Spanish:

• el camino a casa = the way home
• la entrada al museo = the entrance to the museum
• la vuelta a Madrid = the return to Madrid

Because biblioteca is feminine singular, a + la stays a la.

In Spanish, only these two contractions are standard:

• a + el = al
• de + el = del

But:

• a + la stays a la
• de + la stays de la

So:

• a la biblioteca is correct
• al biblioteca is incorrect

If the noun were masculine, you would get a contraction:

• al museo = to the museum

A native speaker would usually prefer No conozco el camino a la biblioteca or even No sé cómo ir a la biblioteca.

Why? Because saber works best with:

• facts
• information
• questions
• how to do something

So these sound natural:

• No sé dónde está la biblioteca. = I don’t know where the library is.
• No sé cómo llegar a la biblioteca. = I don’t know how to get to the library.

But with el camino, Spanish often prefers conocer, because it is about familiarity with the route.

No. Camino is natural, but there are other possibilities depending on meaning and style.

Common alternatives:

• camino = path, route, way
• ruta = route
• dirección = directions/address, depending on context
• manera = way/manner, but usually not for a physical route

For a physical route, camino works well:

• No conozco el camino a la biblioteca.

You could also hear:

• No sé cómo llegar a la biblioteca. = I don’t know how to get to the library.
• No conozco la ruta a la biblioteca. = possible, but less everyday in many contexts

Yes, but the original order is the most neutral and natural:

• No conozco el camino a la biblioteca.

Spanish word order is flexible, but changes often add emphasis or sound more literary or marked.

For example:

• El camino a la biblioteca no lo conozco. = more emphatic, like As for the way to the library, I don’t know it.
• Yo no conozco el camino a la biblioteca. = emphasizes I

For a learner, the standard version is the best one to use.

A broad Spain pronunciation would be approximately:

• No = noh
• conozco = koh-NOTH-koh or in some areas koh-NOS-koh
• el = el
• camino = kah-MEE-noh
• a la = ah lah
• biblioteca = bee-blee-oh-TEH-kah

In much of Spain, z is pronounced like the th in thin, so:

• conozco sounds like koh-NOTH-koh

But in Latin America and some parts of Spain, it may sound more like s:

• koh-NOS-koh

Both are understood; the th sound is especially associated with standard Peninsular Spanish.

Yes. Conozco is the first-person singular present tense of conocer.

So literally it means:

• I do not know / I am not familiar with the way to the library

The present tense here expresses a current situation: right now, I don’t know the route.

It does not mean:

• I didn’t know → No conocía...
• I won’t know → No conoceré...

So this is the normal tense for saying what you currently know or do not know.