Our volunteers are working on translating this article. Until it's ready, maybe the English version can be of some help.

We'll show you how to automatically open any web page you want when you launch Firefox or click the Home button .

Set or change your home page

Open the web page that you want to set as your home page.
Click on the icon at the left side of the web address, drag it to the Home button, and release it.
Click Yes to set this page as your home page.

Tip: More home page settings are available in the OptionsPreferences window.

Click on the Firefox button, select Options and then choose the General panel.Click on the Tools menu, select Options and then choose the General panel.Click on the Firefox menu, select Preferences… and then choose the General panel.Click on the Edit menu, select Preferences and then choose the General panel.
- From the drop-down menu you can choose to have Firefox show a blank page on startup or show all of your windows and tabs from your previous session.
- You can also set multiple pages as your home page: Open each page in a separate tab and click on Use Current Pages.

Click the menu button , select OptionsPreferences and then choose the General panel.
- From the drop-down menu you can choose to have Firefox show a blank page on startup or show all of your windows and tabs from your previous session.
- You can also set multiple pages as your home page: Open each page in a separate tab and click on Use Current Pages.

Restore the default home page

If you want to delete your home page customizations, this is how to do it:

At the top of the Firefox window, click on the Firefox button and then select Options.At the top of the Firefox window, click on the Tools menu and then select Options.On the menu bar, click on the Firefox menu and select Preferences....At the top of the Firefox window, click on the Edit menu and select Preferences.
Click the menu button and choose Options.Preferences.
Select the General panel.
In the Startup box, click Restore to Default.
Click OK to close the Options window.Click Close to close the Preferences window.Close the Preferences window.

If you want to delete your home page customizations, this is how to do it:

At the top of the Firefox window, click on the Firefox button and then select Options.At the top of the Firefox window, click on the Tools menu and then select Options.On the menu bar, click on the Firefox menu and select Preferences....At the top of the Firefox window, click on the Edit menu and select Preferences.
Click the menu button and choose Options.Preferences.
Select the General panel.
In the Startup box under Home Page: click Restore to Default.
Click OK to close the Options window.Click Close to close the Preferences window.Close the Preferences window.

We have answers:

If you keep getting the "Firefox has just updated" tab every time Firefox starts, see the article Firefox says it's just updated every time it starts - how to fix.
If your home page settings are not saved, see How to fix preferences that won't save.
If you can't see the Home button, have a look at Customize Firefox controls, buttons and toolbars
If your home page was hijacked or automatically changed, see Remove a toolbar that has taken over your Firefox search or home page.

If a page keeps opening even after you've removed a third-party toolbar and restored your home page, see Wrong home page opens when I start Firefox - How to fix