כל מי שנרשם היום לחוג מקבל שיעור ראשון חינם.

כל מי means everyone who or anyone who.

So:

• מי שנרשם היום = who signs up today
• כל מי שנרשם היום = everyone/anyone who signs up today

This is a very common Hebrew pattern:

• כל מי ש... = everyone who... / anyone who...

For example:

• כל מי שמגיע מוקדם מקבל מתנה = Anyone who arrives early gets a gift

Here ש־ is a shortened form of אשר, and it means that / who.

So:

• מי שנרשם literally = who registered / who signs up
• more structurally: the person who signs up

This ש־ is extremely common in spoken and written Hebrew. It connects a noun or pronoun to a relative clause.

Examples:

• האיש שדיבר = the man who spoke
• הספר שקניתי = the book that I bought

נרשם can be a little tricky because its form can match more than one meaning depending on context.

In this sentence, it means something like:

• signs up
• registers
• registers today

So כל מי שנרשם היום means anyone who signs up today.

Why this can feel confusing:

• In Hebrew, forms like נרשם can sometimes look like past or present/passive-like forms.
• But in context, especially in ads and announcements, this is naturally understood as who signs up today.

The verb is from להירשם = to register / to sign up.

Grammatically, נרשם is masculine singular, but in many real-life Hebrew sentences, especially ads and announcements, the masculine singular is used in a generic way and can refer to people in general.

So this sentence usually means:

• men and women both are included

That said, modern Hebrew sometimes tries to be more explicitly inclusive, and you may also see forms like:

• כל מי שנרשם/ת היום...
• or other reworded versions

But as written, this is a very standard general advertisement style.

לחוג is made of:

• ל־ = to / for
• חוג = club / class / course / activity group

So לחוג means to a class/course/club or for a class/course.

In this sentence, חוג probably means something like:

• an extracurricular class
• a course
• a group activity

Examples in Israeli usage:

• חוג יוגה = a yoga class
• חוג ציור = an art class
• חוג לילדים = a children’s activity class

So נרשם לחוג = signs up for the class/course

מקבל is the present tense form, literally gets / receives.

In English, we also often use the present tense for general rules or promotional statements:

• Anyone who signs up today gets the first lesson free

Hebrew does the same thing.

So מקבל here does not mean only something happening right now at this second. It expresses a general rule or offer:

• whoever signs up today gets...

If you used יקבל, that would mean will get, which is also possible in some contexts, but מקבל sounds very natural in advertisements and announcements.

שיעור ראשון literally means a first lesson or first lesson.

Hebrew often leaves something indefinite in places where English may naturally say the first lesson.

So:

• שיעור ראשון חינם literally = first lesson free
• natural English = the first lesson is free or a first lesson free

If the Hebrew said השיעור הראשון, it would sound more specifically definite:

• the first lesson

But in ad language, שיעור ראשון חינם is very common and natural.

חינם means free, more exactly free of charge.

So:

• שיעור ראשון חינם = the first lesson free

Putting חינם at the end is very natural in Hebrew. It works a lot like a promotional tag.

Common examples:

• משלוח חינם = free delivery
• כניסה חינם = free entry
• בדיקה חינם = free checkup

You may also see בחינם, which means the same thing in many contexts.

היום modifies נרשם.

So the meaning is:

• anyone who signs up today

It does not mean:

• that they receive the lesson today

The structure is:

• כל מי שנרשם היום לחוג = everyone who signs up today for the class
• מקבל שיעור ראשון חינם = gets the first lesson free

So today is connected to the act of signing up.

Yes, somewhat.

Hebrew word order is often more flexible than English word order, though some versions sound more natural than others.

This sentence:

• כל מי שנרשם היום לחוג מקבל שיעור ראשון חינם

could also appear in slightly different arrangements, for example:

• כל מי שנרשם לחוג היום מקבל שיעור ראשון חינם

Both are understandable. The original version clearly makes today feel tied to signs up.

In general, Hebrew often places time words like היום near the verb they modify.

Yes. חוג can mean different but related things depending on context:

• club
• class
• activity group
• course (in some contexts)

In everyday Israeli Hebrew, חוג often refers to an organized recurring activity, especially:

• after-school activities
• hobby classes
• lessons in dance, art, music, sports, etc.

So in this sentence, the most natural English translation is usually:

• class
• course
• sometimes club, depending on context

You choose the English word based on what kind of activity is being advertised.