Where can I find a decent Android 5 Lollipop design guide?

Question

Android

Unfortunately, I didn’t use phones with Android OS, therefore, many questions accumulated: for example, what is the universal screen size for rendering, what system fonts, element sizes, etc.
Ideally, it would be easy to find a PSD GUI

Answer 1

Everything is on the official website, https://developer.android.com/training/material/th...

Answer 2

Everything is detailed, with markup, sizes, colors and more. www.google.com/design/spec/material-design/introdu...