Is it Beginner's level or Beginner level ?

[kwfine]

Hi teachers,

I am writing an email to my best friend, Jan, who lives in Australia.
These are some of the things that I am going to tell her in the email:
...
There will be no school for a few days on 18th this month due to federal holiday.
I am thinking of doing some self-paced learning at beginner's level, such as Japanese, painting, horse riding.
...

But I am not sure if I should say Beginner's level or Beginner level.
Compare: Intermediate level, Advanced level
Are there any other grammatical mistakes in my email, teachers?

Thank you.

Kitty.

 

[Huda-M]

Hi,
In my opinion, Beginner's level is fine.

 

[konungursvia]

Beginner level, or beginners' level, are better than beginner's level.

Introductory level is also great.

However, you can't have [clause] due to [substantive], it has to be [substantive] due to [substantive].