Does anyone know if you can sign into safari and create bookmarks and passwords and then use that login on another pc or tablet etc and get the same information you saved on the previous machine. Kind of like how google chrome works?
With Safari yes. On my iPad I use Chrome because it syncing capabilities are just really good and can take off from an Apple PC, Windows PC or Android device. If you use Chrome or Firefox on Windows, Apple does have extensions to sync your bookmarks from those browers to Safari. Have a look at this guide from How To Geek How to Sync Your Chrome, Firefox, and Internet Explorer Bookmarks with Safari.