Use lastpass - I do Cyber Security for a living, it works really well and allows you to store things other then credentials into the program. It works on multiple PC's, MAC, mobile phones, it is great. You can store things like credit cards information, insurance information and it will randomly generate passwords for you. This avoids the mistake of using simple passwords and the same password for every site. Please do not write things down on paper, some one can steal very easily. Once you get going with it, it is something that is invaluable.
Jim