So I checked my browser and figured out how to save my login. I use Chrome so other browsers may be different. On Chrome, there is a key in the address bar by the star when you go to login. If you click it after you enter you login information, it will ask you if you want to save your password. Now it's already filled in for me and I just click login.
Other browsers, you can google how to save a password. It's usually pretty simple. I'm not sure on phones though. I rarely get on on my phone.