Sketchup expert to help model a house so I can interior design it

we have just purchased a small house and I would like to be able to envision the space without furniture in and figure out the best way to place furniture. I would like it to be editable, I have a little knowledge of sketchup but I make many mistakes still when trying to model somthing and it would take me forever and i would probably do something wrong that would make it difficult to edit in the future