A Korean letter is Hangul. ㄱ ㄴ ㄷ ㄹ ㅁ ㅂ ㅅ ㅇ ㅈ ㅊ ㅋ ㅌ ㅍ ㅎ are consonants and ㅏ ㅑ ㅓ ㅕ ㅗ ㅛ ㅜ ㅠ ㅡ ㅣ are vowels.

Consonants:

ㄱ sounds like g.

ㄴ sounds like n.

ㄷ sounds like d.

ㄹ sounds like l.

ㅁ sounds like m.

ㅂ sounds like b.

ㅅ sounds like s.

ㅇ doesn't have any sound when it comes first and sounds like ~ng when it is at the bottom.

ㅈ sounds like j.

ㅊ sounds like ch.

ㅋ sounds like k.

ㅌ sounds like t.

ㅍ sounds like p.

ㅎ sounds like h.

Vowels:

ㅏ sounds like a.

ㅑ sounds like ya.

ㅓ sounds like u.

ㅕ sounds like yu.

ㅗ sounds like o.

ㅛ sounds like yo.

ㅜ sounds like oo.

ㅠ sounds like yoo.

ㅡ sounds like eu

ㅣ sounds like i

There are some mixed consonants and vowels.

ㄲ sounds like gg.

ㄸ sounds like dd.

ㅃ sounds like bb

ㅆ sounds like ss.

ㅉ sounds like jj.

ㅐ sounds like ae

ㅒ sounds like yae

ㅔ sounds like ae

ㅖ sounds like yae

ㅚ sounds like oi

ㅙ sounds like oae

ㅟ sounds like we

ㅞ sounds like wae

ㅢ sounds like eui

ㅝ sounds like wu.

Now we are going to make a letter.

ㄱ + ㅏ = 가 (ga)

ㄴ + ㅏ = 나 (na)

ㄷ + ㅏ = 다 (da)

ㄹ + ㅏ = 라 (la)

ㅁ + ㅏ = 마 (ma)

ㅂ + ㅓ = 버 (bu)

ㅅ + ㅓ = 서 (su)

ㅇ + ㅓ = 어 (uh) (If ㅇcomes at the beginning of the letter it has no sound.)

ㅈ + ㅓ = 저 (ju)

ㅊ + ㅓ = 처 (chu)

ㅌ + ㅗ = 토 (to)

ㅍ + ㅗ = 포 (po)

ㅋ + ㅗ = 코 (ko)

ㅎ + ㅗ = 호 (ho)

ㄲ + ㅜ = 꾸 (ggoo)

ㄸ + ㅜ = 뚜 (ddoo)

ㅃ +ㅣ = 삐 (bbi)

ㅆ + ㅣ = 씨 (ssi)

ㅉ + ㅡ = 쯔 (jjeu)