Button secqencial active and disable?

Hi, I'm totally new with Unity and have no coding experience.
could someone show me how to code this and how I can understand it.
Let say I have 5 buttons I would like the first button 1 to be active while the rest would be disable but still visible with in the Canvas.
but after I click on button 1 it would be disable and then button 2 would be enable and the rest still disable on a loop
I would also like them in to a timer lock if possible
let say after button 1 is press button 2 would be on a timer for 30sec before to be allowed to be press
and so on...
Help please?​

 

Take a look at the section here: https://unity3d.com/learn
There are some sub sections on coding, interface, buttons, etc..

Even if I wrote a working example for you, the need to understand some coding to progress is required.
You should take a bit of time to learn, and practice some general ideas and then use what you learn along the way to design and build what you want. I honestly think that will help you a lot more