The set-up instructions are sewn onto the outside of the carry bag and another set is sewn into the inside of the bag. It seems to be well-made and reasonably easy to set up. I was able to roughly scan in the instructions that are on the outside of the bag for you and post them here as a picture:

Last summer, I took everything out of the bag and set it up in my living room (didn't stake it). It seemed good to me; but, I never needed to use it. Maybe this year....
It may depend on what you plan to use the unit for. If it is just for a changing room and porta potti, most any unit will do. But, If you want to be able to take a shower inside, hanging your sun shower and towel, clothes, shampoo, etc, then you something that is made for that purpose. The Ozark Shower Tent has specific places to put your towel, shampoo and soap and sun shower bag and it has a step-out ground flap.