anyone know how to type in Hebrew alphabet through an English computer either windows or chromebook?
There is help for this in both the FAQ and the Welcome posts, which are sticky threads on the forum.
no i wanna know how to
You can try virtual keyboard:
http://www.lexilogos.com/keyboard/hebrew.htm - it's not a keyboard layout, but rather the order of the abc. Another thing that I saw there is that you can also type Niqqud there.