A point in the right direction?

Hi all,

I have been tasked with creating a very simple app for my place of work but have no idea where to start…

The app goes like this:

Login/register an account -> view a feed of posts (text only) from other employees -> be able to comment on that post.

So employees should be able to create an account and make a post which displays on a public feed that other employees can see and comment on.

I was thinking about using Firebasw but really have no clue.

Can anyone point me in the right direction?