לקח לי חודש להתרגל למשרד החדש, אבל עכשיו אני מרגישה שם בנוח.

Because Hebrew uses לקח ל־ to express it took someone....

So:

• לקח לי חודש = It took me a month
• literally, something like A month took to me

You do not normally say אני לקחתי חודש for this meaning, because that would mean I took a month in the sense of taking or grabbing, which is not what you want here.

The pattern is very common:

• לקח לי זמן להבין = It took me time to understand
• לקח לנו שעה להגיע = It took us an hour to arrive

Here, לקח agrees with חודש, which is masculine singular.

So:

• חודש = masculine singular → לקח
• שנה = feminine singular → לקחה
• שעתיים / יומיים = plural/dual → לקחו

Compare:

• לקח לי חודש = It took me a month
• לקחה לי שנה = It took me a year
• לקחו לי יומיים = It took me two days

So the verb form changes according to the time expression.

In Hebrew, a bare time noun often means a/an in this kind of sentence.

So:

• לקח לי חודש = It took me a month

You can say חודש אחד, but that usually adds emphasis, like one whole month or a full month.

The simpler, more natural version here is just חודש.

לי means to me.

In this structure, Hebrew uses a preposition where English uses an indirect object:

• לקח לי חודש = It took me a month
• literally: A month took to me

Other examples:

• לקח לו הרבה זמן = It took him a long time
• לקח לה שבוע = It took her a week
• לקח להם כמה דקות = It took them a few minutes

So ל־ + pronoun is the normal way to say who experienced the time required.

להתרגל means to get used to.

It is the infinitive form of a verb in the Hitpael pattern. The basic idea is becoming accustomed or adapting yourself to something.

A few useful forms:

• להתרגל = to get used to
• התרגלתי = I got used to
• מתרגל / מתרגלת = getting used to / am getting used to

So in the sentence:

• לקח לי חודש להתרגל... = It took me a month to get used to...

This verb is extremely common when talking about adjusting to a new place, job, schedule, language, etc.

Because the verb להתרגל normally takes the preposition ל־, meaning to.

So Hebrew says:

• להתרגל ל... = to get used to ...

Examples:

• להתרגל למזג האוויר = to get used to the weather
• להתרגל לעבודה חדשה = to get used to a new job
• להתרגל לאנשים חדשים = to get used to new people

So:

• להתרגל למשרד החדש = to get used to the new office

This is different from English, where we just say get used to something without thinking much about the preposition. In Hebrew, the ל־ is required.

Because in Hebrew, when a noun + adjective phrase is definite, both the noun and the adjective usually take ה־.

So:

• משרד חדש = a new office
• המשרד החדש = the new office

This is a very important pattern:

• ספר טוב = a good book
• הספר הטוב = the good book

Here:

• משרד is masculine singular
• חדש agrees with it, so it is also masculine singular
• both are definite, so both get ה־

That is why you see למשרד החדש and not just למשרד חדש.

מרגישה is the feminine singular present-tense form of להרגיש = to feel.

So this tells you the speaker is female.

Compare:

• אני מרגישה = I feel / I am feeling, said by a woman
• אני מרגיש = I feel / I am feeling, said by a man

Hebrew present tense agrees with gender in the singular, so this is a very common thing to notice.

Not always, but it is very natural here.

In present tense, Hebrew verbs do not show person clearly enough on their own, so pronouns are often used:

• אני מרגישה
• אתה מרגיש
• היא מרגישה

In context, you can sometimes drop אני if it is obvious:

• עכשיו מרגישה שם בנוח — possible in very informal speech, but less standard

So עכשיו אני מרגישה שם בנוח is the clear, natural full version.

Here, שם means there.

So:

• אני מרגישה שם בנוח = I feel comfortable there

This is a very common word, but it can also mean name in other contexts:

• מה השם שלך? = What is your name?

So the meaning depends on context. In this sentence, it clearly means there, referring to the office.

בנוח means comfortably / at ease / comfortable in the expression להרגיש בנוח.

So:

• אני מרגישה שם בנוח = I feel comfortable there / I feel at ease there

This is a fixed and very common phrase:

• להרגיש בנוח = to feel comfortable
• תרגיש/י בנוח = feel free / make yourself comfortable

נוח by itself is an adjective meaning comfortable or convenient, but in this sentence the idiomatic expression is להרגיש בנוח.

Examples:

• אני לא מרגיש בנוח כאן = I don’t feel comfortable here
• היא מרגישה בנוח עם האנשים האלה = She feels comfortable with those people

So it is best to learn בנוח here as part of the whole phrase.

The sentence as written is very natural, but Hebrew word order is somewhat flexible.

The given order:

• לקח לי חודש להתרגל למשרד החדש, אבל עכשיו אני מרגישה שם בנוח.

is smooth and standard.

You might also hear variations like:

• עכשיו אני מרגישה בנוח שם
• אבל עכשיו שם אני מרגישה בנוח — more marked, with extra emphasis on there

However, מרגישה שם בנוח sounds especially natural because שם fits nicely before בנוח in this sentence.

So the original version is a very good model to learn.