Find password for Wi-Fi

If it's the one asked for to connect wirelessly to your router it should be on a label on the router as suggested. If not you'll have to connect via an ethernet cable temporarily and access the router via a web browser and set the password yourself. Each type of router will have an address whichyou type into the browser address window and provide a user name and access password which are usually something like 'Admin'and 'Internet'. You'd be advised to check your router handbook or download it from the manufacturer.