Esa película me aburre un poco.

Because película is a feminine singular noun, so the demonstrative has to agree with it.

• esa película = that movie
• ese libro = that book

So esa matches película in gender and number.

Spanish is structuring this as That movie bores me a little.

So:

• Esa película = the thing causing the feeling
• me = me
• aburre = bores

In English, learners often expect something more like I am a little bored by that movie, but Spanish very naturally uses the movie as the subject here.

It comes from the verb aburrir, meaning to bore.

Here it is in the present tense, third person singular, because the subject is esa película, which is singular.

• Esa película me aburre
• Esas películas me aburren

So the verb agrees with película, not with me.

Yes, in the sense that the thing is the grammatical subject and the person affected appears as a pronoun.

• Esa película me gusta = That movie pleases me / I like that movie
• Esa película me aburre = That movie bores me

But aburrir is still a normal verb meaning to bore, so it can also be used in a more straightforward way:

• Yo aburro a mis amigos = I bore my friends

So it behaves similarly to gustar in this sentence, but it is not limited to that pattern.

This is a very common question.

• me aburre = it bores me
• me aburro = I get bored / I am getting bored

So:

• Esa película me aburre = That movie bores me
• Con esa película me aburro = I get bored with that movie

In me aburre, the movie is doing the boring.
In me aburro, I am the subject.

Yes, but it is not exactly the same.

• Esa película me aburre un poco focuses on the movie as the cause.
• Estoy aburrido / aburrida focuses on your state: I’m bored.

So if you say:

• Estoy aburrido / aburrida con esa película

you are describing how you feel.
If you say:

• Esa película me aburre un poco

you are describing the effect the movie has on you.

Both are natural, but they are not identical in emphasis.

Un poco means a little or a bit.

It softens the statement:

• Esa película me aburre = That movie bores me
• Esa película me aburre un poco = That movie bores me a little

It usually comes after the verb, as it does here. That is the most natural position in a neutral sentence.

Yes, but the given order is the most neutral and common:

• Esa película me aburre un poco

You may also hear:

• Me aburre un poco esa película

This can put a little more focus on me aburre or sound more conversational depending on context.

What normally does not change is the position of the object pronoun me: it usually goes before the conjugated verb.

• me aburre ✔
• aburre me ✘

The accent mark shows where the stress falls:

• pe-LÍ-cu-la

Without the accent, Spanish stress rules would suggest a different pronunciation, so the written accent is necessary.

This is very common in Spanish and helps you pronounce words correctly.

A simple guide is:

• Esa = EH-sa
• película = peh-LEE-koo-la
• me = meh
• aburre = ah-BOO-rre
• un poco = oon PO-ko

A few useful notes:

• The stress in película is on LÍ
• The rr sound in aburre is a strong rolled or trilled r
• In normal speech, the whole sentence flows together smoothly: Esa película me aburre un poco

Yes. You just change the object pronoun:

• Esa película te aburre un poco = That movie bores you a little
• Esa película le aburre un poco = That movie bores him/her/you (formal) a little
• Esa película nos aburre un poco = That movie bores us a little
• Esa película os aburre un poco = That movie bores you all a little — this is especially relevant in Spain
• Esa película les aburre un poco = That movie bores them/you all (formal) a little

In Spain, os is the usual plural you form for informal situations.