אני עדיין לא יודעת אם הקורס מתאים לי, אבל אני רוצה לנסות שיעור אחד.

Because the speaker is female.

In Hebrew, the present tense often changes for gender:

• יודע = knows / know for a masculine singular speaker
• יודעת = knows / know for a feminine singular speaker

So:

• אני יודעת = a woman/girl saying I know
• אני יודע = a man/boy saying I know

In this sentence, יודעת tells you the speaker is female.

This is something that confuses many learners.

In normal unpointed Hebrew spelling, רוצה can be:

• masculine singular: pronounced roughly rotze
• feminine singular: pronounced roughly rotza

So the spelling stays the same, but the pronunciation changes.

That means:

• a male speaker could say אני רוצה
• a female speaker could also say אני רוצה

But with vowel marks or in speech, the difference is clearer.

עדיין means still or yet, depending on context.

With a negative, עדיין לא very often means not yet:

• אני עדיין לא יודעת = I still don’t know / I don’t know yet

This is a very common Hebrew pattern:

• עדיין לא = not yet
• עדיין כן is generally not used the same way English uses still yes

So as a chunk, it is useful to remember:

• עדיין לא = not yet / still not

Yes, you can. It is grammatical.

Both are possible:

• אני עדיין לא יודעת
• אני לא יודעת עדיין

But אני עדיין לא יודעת is usually the more natural and common order.

Very roughly:

• עדיין לא sounds like a fixed phrase: not yet
• לא יודעת עדיין can sound a little more like you are adding still/yet afterward for emphasis

So for a learner, עדיין לא is the safest default.

Yes, אם can mean if, but in sentences like this it often means whether.

Here:

• אני עדיין לא יודעת אם הקורס מתאים לי means
• I still don’t know whether the course suits me

After verbs like know, ask, check, see, Hebrew often uses אם where English would prefer whether.

So in this sentence, אם is not introducing a condition. It is introducing an embedded yes/no question:

• Does the course suit me or not?

Because מתאים agrees with הקורס, not with me.

• הקורס = the course
• קורס is a masculine singular noun

So the adjective or participle must also be masculine singular:

• הקורס מתאים = the course is suitable / suits

If the noun were feminine, you would use מתאימה:

• התכנית מתאימה לי = the program suits me

So the agreement is with the thing doing the suiting, not with the person receiving it.

Because להתאים / מתאים works with the preposition ל־ in Hebrew.

Literally, it is closer to:

• is suitable to me
• fits me
• works for me

So:

• מתאים לי = suits me / is suitable for me

Using אותי here would be wrong, because me is not a direct object in this structure.

This is an important pattern:

• מתאים לי = suits me
• מתאים לך = suits you
• מתאים לו/לה = suits him/her

A learner can think of it either way, but grammatically it behaves a lot like an adjective/participle in the present tense.

That is why it changes for gender and number:

• מתאים = masculine singular
• מתאימה = feminine singular
• מתאימים = masculine plural
• מתאימות = feminine plural

In everyday learning terms, it is easiest to understand:

• הקורס מתאים לי = The course suits me / is suitable for me

So even if English uses a full verb, Hebrew often uses a form that looks adjective-like in the present.

Hebrew usually likes to state the subject clearly, especially in the present tense.

So:

• אבל אני רוצה לנסות... is natural and standard

In the present tense, Hebrew verb forms often do not clearly show the subject by themselves, so pronouns are used more often than in some other tenses.

Could a subject be omitted in some contexts? Sometimes, especially in casual speech where the subject is obvious. But for standard, clear Hebrew, repeating אני here is normal and good.

Because after רוצה (want), Hebrew normally uses an infinitive.

• רוצה = want
• לנסות = to try

So:

• אני רוצה לנסות = I want to try

This is the same basic idea as in English:

• want to try
• need to go
• like to learn

In Hebrew, the infinitive usually begins with ל־:

• לנסות = to try
• ללמוד = to study / to learn
• לראות = to see

Because אחד means one, while ראשון means first.

These are different ideas:

• שיעור אחד = one lesson
• שיעור ראשון = first lesson

In this sentence, the speaker wants to try one lesson to see how it goes. The focus is on the quantity, not on its position in a sequence.

So שיעור אחד is exactly right for one lesson.

Because it is indefinite.

• השיעור = the lesson
• שיעור = a lesson / lesson

Here the meaning is:

• I want to try one lesson not
• I want to try the one lesson

So Hebrew leaves it indefinite:

• שיעור אחד

Also notice the normal word order:

• noun + number
• שיעור אחד = one lesson not אחד שיעור

Only the forms that show the speaker’s gender would change.

A male speaker would say:

אני עדיין לא יודע אם הקורס מתאים לי, אבל אני רוצה לנסות שיעור אחד.

The main visible change is:

• יודעת → יודע

Also, רוצה would still be written רוצה, but in speech it would be pronounced in the masculine way.

So:

• female: אני עדיין לא יודעת... אני רוצה...
• male: אני עדיין לא יודע... אני רוצה...

No. Hebrew does not need an extra it here.

In English, you might think in terms of:

• I don’t know if the course is suitable for me
• I don’t know if it suits me

But in Hebrew, the subject is already there:

• הקורס = the course

So:

• הקורס מתאים לי = the course suits me / is suitable for me

No extra pronoun is needed.