this video will help you to create the negative space logos very quickly and will make you understand the basic concept. you will be able to make great and beautiful shapes with this trick. as you can see i have explained this within 4 minutes, and you can do this within 2 minutes.
the adobe illustrator tool used here is PATH FINDER. and i have used minus front .
the CTRL +8 is use to make the compound path, or to unite the different layers so that the path finder can perform the functions correctly.
make sure you are expanding every outline.