Hon brukar bläddra lite i en bok innan hon bestämmer sig för om hon vill köpa den.

Brukar means usually, tends to, or is in the habit of doing something.

So Hon brukar bläddra... means something like:

• She usually flips through...
• She tends to leaf through...
• She is in the habit of leafing through...

A useful thing to remember is that brukar is commonly followed by the infinitive form of the main verb:

• Hon brukar läsa. = She usually reads.
• Jag brukar gå dit. = I usually go there.

It describes a habitual action, not something happening right now.

Because it comes after brukar.

In Swedish, after modal-like or auxiliary-like verbs such as brukar, the next verb is usually in the infinitive:

• Hon brukar bläddra
• not Hon brukar bläddrar

Compare:

• Hon bläddrar i en bok. = She is flipping through a book / She flips through a book.
• Hon brukar bläddra i en bok. = She usually flips through a book.

So brukar is the conjugated verb, and bläddra stays in the infinitive.

Bläddra i en bok means to leaf through a book, to flip through a book, or to browse through a book.

The verb bläddra often goes with i when you mean flipping through the pages of something:

• bläddra i en tidning = flip through a newspaper
• bläddra i en katalog = browse through a catalog

So the i is part of the normal pattern with this verb when talking about looking through pages.

Because bläddra commonly takes the preposition i when the meaning is flip through / leaf through something.

Literally, English speakers may find it odd, because English says flip through a book without in, but Swedish prefers:

• bläddra i en bok
• literally closer to leaf in a book

This is just a normal verb-preposition combination that you learn as a set phrase.

Lite means a little, a bit, or sometimes just softens the statement.

Here, bläddra lite i en bok suggests:

• flip through a book a little
• browse a bit in a book
• have a quick look through a book

In everyday Swedish, lite is very common and can make something sound more casual, relaxed, or less intense.

Compare:

• Hon bläddrar i en bok. = She flips through a book.
• Hon bläddrar lite i en bok. = She flips through a book a bit / just leafs through it a little.

Bestämma sig is a reflexive verb, and it means to decide or more literally to make up one’s mind.

So:

• hon bestämmer sig = she decides / she makes up her mind

The word sig is the reflexive pronoun used for himself/herself/itself/themselves depending on the subject. Here it refers back to hon.

Compare:

• Jag bestämmer mig. = I decide.
• Du bestämmer dig. = You decide.
• Hon bestämmer sig. = She decides.
• Vi bestämmer oss. = We decide.

You usually need the reflexive pronoun with this meaning.

In bestämmer sig för om..., the för belongs to the expression bestämma sig för.

Bestämma sig för often means:

• decide on
• make up one’s mind about
• choose

Examples:

• Jag bestämde mig för den röda. = I decided on the red one.
• Hon bestämde sig för att gå hem. = She decided to go home.

In your sentence, it is followed by om hon vill köpa den, which expresses what she is deciding about: whether she wants to buy it.

So the structure is roughly:

• bestämma sig för om... = decide whether...

Here om means whether.

So:

• om hon vill köpa den = whether she wants to buy it

This is a very common use of om in Swedish.

Compare:

• Jag vet inte om han kommer. = I don’t know whether he is coming.
• Hon funderar på om det är dyrt. = She is wondering whether it is expensive.

Important: Swedish om can also mean if, so learners often need to tell from context whether it means if or whether.

Because the sentence first introduces the book as a book, and then refers back to that same book as it.

• en bok = a book
• den = it / that one, referring back to bok

Since bok is a common gender noun (en word), the pronoun is den.

Compare:

• Jag ser en bil. Den är röd. = I see a car. It is red.
• Jag köper ett äpple. Det är gott. = I buy an apple. It is tasty.

So den is used because bok is an en noun.

Because innan introduces a subordinate clause meaning before.

The clause innan hon bestämmer sig... is structured like a normal subordinate clause:

• innan = before
• hon bestämmer sig = she decides

In this particular part, the word order looks similar to English. But Swedish subordinate clauses often have special word order, especially with adverbs.

For example:

• ...innan hon inte bestämmer sig would place inte before the verb in a subordinate clause.

A useful rule is that after conjunctions like innan, att, om, eftersom, Swedish often uses subordinate clause word order.

Yes. Innan means before.

So:

• innan hon bestämmer sig = before she decides

It can be used in many similar contexts:

• Tvätta händerna innan du äter. = Wash your hands before you eat.
• Jag vill tänka innan jag svarar. = I want to think before I answer.

In your sentence, it shows that the flipping through happens first, and the decision happens afterward.

Yes. Vill means want(s) to, and it is followed by the infinitive köpa.

So:

• hon vill köpa den = she wants to buy it

This is the normal pattern:

• vill + infinitive
• kan + infinitive
• ska + infinitive
• måste + infinitive

Examples:

• Jag vill läsa. = I want to read.
• Hon kan simma. = She can swim.
• Vi ska åka. = We are going to travel.

So köpa stays in the infinitive because vill is the conjugated verb.

Because each verb phrase has a different function:

• brukar bläddra = describes a habitual action
• bestämmer sig = describes the act of deciding
• vill köpa = describes what she wants

So the sentence is built in layers:

1. Hon brukar bläddra lite i en bok

   • She usually flips through a book a bit

2. innan hon bestämmer sig

   • before she decides

3. för om hon vill köpa den

   • whether she wants to buy it

This kind of chaining is very normal in Swedish and English.

Usually it.

Even though den can sometimes feel like that one, here the most natural English translation is:

• She usually flips through a book a little before deciding whether she wants to buy it.

Using the book is possible if you want extra clarity, but it is more natural in ordinary English because the noun has just been mentioned.

A general habit, because of brukar.

Without brukar, the sentence could describe one event more easily depending on context:

• Hon bläddrar lite i en bok innan hon bestämmer sig...

But with brukar, the meaning is clearly habitual:

• She usually does this
• This is something she tends to do

So the sentence describes her typical behavior when considering buying a book.