Take everything out onto your driveway. In that process determine, what can be given away or tossed out, and put them by the curb. Plan how to re-organize the things you are putting back in the garage. Contact your family members and friends about taking things for their use, if you don’t have any short term plans for usage. Be mindful of ease of access. You may want to invest in buying some shelves, wall hooks, etc., to facilitate your organizational efforts. Sweep or vacuum the floors, disinfect, and paint where appropriate. Hatzlocha!