Firefox — Fora społeczności

Now i installed an app with shortcuts to youtube and netflix for easy use now whenever i press either of them they open a new firefox windows with none of my info no firefox account logged in nothing like a fresh install and it is also that when that window is opened and i open another shortcut then another windows isnt opened and just a new tab is opened in the fresh install windows

On my home page i have 2 rows of short cuts. Then the latest news listings. Can I change the types of news listings? For example one story might be from NPR while the next can be from CNN then another from MSNBC. Non of which interests me. Is there away to set sites in the settings to list News and events that I would be interested in? Sites like The Wire, Reuters, NewsMax, RT, The National Desk, etc. So would there be a way to get those headlines? Thanks