Cleaning my garage is a big challenge. First of all I have promised myself that I will donate at least 2 hours of cleaning daily. After doing my daily chores, I go to the garage and start sorting and emptying boxes and containers before it gets too hot.
To organize your garage to be a useful storage area, the best advice is to get rid of those cardboard boxes that conceal what is being stored. We have found clear plastic containers solve the problem of wondering what is inside.
For a well-packed garage, allow several days for a complete job. I am a semi-retired remodeling contractor and rental property owner.
I don't spend money on those vacuums for the garage, workshop, etc. I buy the old working vacs from garage sales, for no more than $4.00. They do the job just as well.
I keep certain things on hand when cleaning the garage, such as my camera, which I use to take pictures of things I want to sell so I can post them quickly. Of course cleaning supplies, and a large floor squeegee works wonders when mopping a garage floor to get it dry fast.
Does a dirty garage floor drive you nuts? It does me. We go in and out through the garage. I hate it when people come in and drag dirt in on their feet from the garage.