Okay, now you need a pole barn to store all your supplies. Check out the proper post pouring technique in this picture.

And just put in as many posts as you like, or think are needed. At least one for each corner is recommended.

And once you have the posts in place it's really straight forward, you just add the roof.

And before you know it you have a pole barn for keeping the building supplies out of the weather for your quick and easy cabin project. You are welcome to try this at home.