See:

• https://support.mozilla.org/en-US/kb/customize-items-on-firefox-new-tab-page
• https://support.mozilla.org/en-US/kb/customize-your-new-tab-page
• https://support.mozilla.org/en-US/kb/how-to-set-the-home-page

OK COR EL Thank you ! Now i dont understand because when i click on the gear settings icon i do not see the parameters showed on the "customize your new tab page" like shortcuts (2 rows..), weather etc" ?

What do you get if you open about:newtab (or about:home) directly via the location/address bar?

I am very sorry but are you asking me to copy and paste in the adress bar "about:home or about.newtab" ? because i did this and nothing happened.

It is about:newtab with a colon, both about:newtab and about:home should open the Firefox Home page with the tiles. Don't you see the cog icon in the top right corner that allows to select what to show on the Firefox Home page?

Cog icon ? you mean the settings icon ? Yes i see it why ?

Just to be sure, I mean the settings icon in the webpage area and not such a button in the user interface. Did you try to click this icon and select what you want to see on the page? See also: Settings -> Home

Not sure to understand; i have a settings icon here at my top right of this page im writing right now. And yes i tried to set things first here but i never seen the option " like shortcuts (2 rows..), weather etc"