Vowels.
ㅏ= A
ㅔ = E
ㅣ= I/EE
ㅗ = O.
ㅜ = U (pronounced as "oo")
ㅓ= EO (pronounced as "u" or "uh" just like how you read "huh" in English.)
ㅡ = EU (pronounced as "oo" just like how you read "noon" in English)
ㅐ= AE (pronounced as "ay" just like how you read "Say" in English.)
Complex Vowels
ㅛ = YO
ㅕ = YEO
ㅑ = YA
ㅠ = YU
ㅒ = YAE
ㅔ = YE.
Tip: Adding a line to a vowel makes a "Y"
ㅟ = WI
ㅝ = WO
ㅚ = WAE
ㅘ = WA
ㅢ = UI (pronounced as "ee" just like how you read "leep" in English.)