Přihláška je tady, takže se můžu přihlásit.

They come from the same word family.

• přihlásit se = to sign up, register, apply, log in, report oneself, depending on context
• přihláška = an application form, registration form, or application

So in this sentence, the first word is the thing you use, and the last verb is the action you do with it.

A rough comparison in English would be something like application and apply.

Přihláška is a feminine noun in the nominative singular, because it is the subject of the sentence.

• Přihláška je tady = The application form is here

The verb je is the 3rd person singular of být (to be), matching the singular subject přihláška.

Because the verb is přihlásit se, not just přihlásit.

In Czech, many verbs are used with se or si, and you usually need to learn them together as part of the verb.

Here:

• přihlásit se = to sign up / register / apply oneself

So se is not optional here. It belongs to the verb.

Because the sentence means I can sign up / I’m able to sign up, not simply I will sign up or I sign up.

• můžu = I can
• přihlásit se = to sign up

So:

• můžu se přihlásit = I can sign up
• přihlásím se = I will sign up / I’ll register

The sentence is talking about possibility or ability, not just the action itself.

This is normal Czech word order with short unstressed words, called clitics.

Words like se, si, mi, ti, ho, jsem often go very early in the clause, usually in the second position.

So Czech prefers:

• takže se můžu přihlásit

rather than:

• takže můžu se přihlásit

The second version may sometimes be heard in speech, but the first is the normal standard order.

Yes. Both mean I can.

• můžu = very common in everyday Czech
• mohu = more formal or bookish

So:

• můžu se přihlásit = neutral, everyday Czech
• mohu se přihlásit = more formal

Both are correct.

Because after a modal verb like můžu (can), Czech often puts the main infinitive later in the clause.

So the structure is:

• můžu
  • infinitive
• můžu se přihlásit = I can sign up

This is similar to English in meaning, but Czech word order is more flexible. Still, placing the infinitive near the end is very natural here.

Takže means so, therefore, or and so.

It links the two parts of the sentence:

• Přihláška je tady = The application form is here
• takže se můžu přihlásit = so I can sign up

It shows a result or conclusion.

A few rough comparisons:

• takže = so / therefore
• proto or proto tedy can also express therefore, but takže is very common and natural in speech

Yes, all three are possible, but they differ in style.

• tady = here, very common and neutral in everyday speech
• tu = here, also common, often slightly shorter and conversational
• zde = here, more formal or written

So:

• Přihláška je tady = natural everyday Czech
• Přihláška je zde = more formal

The hardest part for many English speakers is ř.

A rough guide:

• při- sounds something like przhi-, but there is no exact English equivalent
• hlá has a long á, so hold the vowel a bit longer
• ška has sh as in shoe

So very approximately:

• přihláška ≈ przhi-HLAA-shka
• přihlásit ≈ przhi-HLAA-sit

A few key points:

• ř is a special Czech sound, something between r and zh
• á is long
• š = sh
• stress in Czech is usually on the first syllable: PŘI-hláš-ka, PŘI-hlá-sit

Yes, Czech word order is flexible, but not all versions sound equally natural.

The given sentence:

• Přihláška je tady, takže se můžu přihlásit.

is perfectly natural.

You could also hear small variations such as:

• Přihláška je tady, tak se můžu přihlásit.

But you would normally keep se early in the second clause.

So Czech does allow changes for emphasis, but the original version is a very good standard model to learn.