Click 'Vowels' to start. If you have any questions about anything I've said, or any corrections, please let me know and comment.
I will do a second part for consonants at some time, but there are more consonants than vowels, and the pronunciation (especially with strong and double consonants) is a lot harder to explain. When I've done that, I'll probably teach some actual Korean. Side Note: It's perfectly fine to pronounce ㅔ and ㅐthe same. You'll be understood either way, and actually many Koreans pronounce them exactly the same. But I'll try and explain what the difference is anyway The sound for ㅔ sounds like a very clipped 'e' sound, close to as in the word 'net'. Sort of like an 'e' sound but with your tongue further forward in your mouth. But the sound for ㅔ comes from further back in your mouth, requires you to open your mouth wider and sounds more like an 'ay' rather than an 'e'. However, this varies a lot between dialects, so don't worry about getting them wrong.