you say
Hello, I'm (your name) or Hello, My name is (name)
in korean
First you need to greet the person(s) by saying Hello
Hello is "Annyeonghaseyo"(Annyeong is basically informal way of saying Hi, like saying hi to friends, Annyeonghaseyo is the formal way of saying hello, just like someone older than you or someone you don't know or someone that you want to be polite.)
and then when you say your name
My name is (name)
you say "Ji ireum - eun (name) imninda" ( the pronounciation is pretty hard) so just pronounce it like this
Ji ireum - eun (name) imnida <----------------- how it looks like
Ji urum - un (name) imnida <----------------- this is how I say it
If you want to write it it would look like this
안녕하세요, 제 이름은 [your name] 입니다
Hello, Ji ireum-eun (name) imnida
well, that's the only things that I can tell you
i'm just a begginer too ~!~! well try hard!~!~!