E-scooters come 90% assembled and the remaining assembly can be done easily by any novice. For most all e-scooters you will have to attach the handlebars to the stem of the scooter. Other items which may need to be installed include tires, lights and added attachments (such as cell phone holders). Often tools are provided with the unit or are standard tools found in any hardware store. If you have purchased an e-scooter with air-filled tires you will likely have to fill the tires to the appropriate PSI (this will be written on the tire or included in the owner's manual) as well before riding. All e-scooters will come with an owner's manual with instructions for the assembly requirements.