Could you please explain better?
Administration Control Panel - > eZ Portal "Settings" - > "Install and enable eZ Portal".
ezBlock Manager - > "Add ezBlock" - > Add "Board News ezBlock".
There will be a drop down selection named "Select board for News". The selected option will show posts from on your homepage. If you want to limit the amount of posts shown, you can do so by editing the box "Number of News items to show" to your desired amount. If need further assistance, I will be glad to help.
I am also going to link you to a user created guide on "eZ Portal" I would recommend you to take a look at it.
eZ Portal Guide < - Click for guide.