Edit: Now when you choose the color of you're background, you can choose from the pallete that appears upon clicking "choose" OR you can simply click the background of your image to select the color that you would like to be transparent. This is stated on the website when you click the option "transparent"

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Edit: This tutorial may be misleading in the way the image is placed back into the tutorial. ONCE YOU HAVE CONVERTED AN IMAGE, YOU CANNOT EDIT IT IN PAINT ANY FURTHER, otherwise the transparency will be reset to a white/black background!

If you are trying to layer images in MS Paint, GO TO THIS TUTORIAL: fav.me/d7h30b3

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EDIT: Iaza is now known as Ezimba, so don't be confused when you type in Iaza.com and are taken to Ezimba.com! It's the same thing and this tutorial is still accurate to that website. Just remember to click "Transparent" rather than "Transparent+" so as not to cause confusion

LARGE PICTURE!!!
anywayy i was asked how i make transparent backgrounds in ms paint and so i decided it would be easiest to just make a tutorial for you all

i'll probably put it in my scraps later
also this is just the way i do it. I'm sure there are other ways of making a transparent background, but this is the method i use

hope it helps! let me know if you found this useful