Learn Finnish: Minä olen suomalainen.

In Finnish, verbs change their endings based on who is doing the action. The -n ending goes with minä (I). Because of this ending, olen specifically means "I am".

Can I just say Olen suomalainen without the word minä?

Yes! Because the -n at the end of olen already tells us the subject is "I", the word minä is actually optional. You will often hear Finnish people drop it in everyday speech.

Why is suomalainen written with a lowercase letter?

In English, we always capitalize nationalities (like "Finnish"). In Finnish, words for nationalities and languages are always written with lowercase letters unless they are the very first word of a sentence.

Can I use suomalainen to talk about the Finnish language?

No, suomalainen is used for a Finnish person or to describe things from Finland (like a Finnish car or Finnish food). If you want to talk about the Finnish language, you use the word suomi.