How to display the content of your blog within the welcome page: Click on the "Blog" link in the "Spaces" panel (left column) and edit the page. You will see lines of code. Just select and copy this code into your clipboard. Cancel the edition. Go to your place's Welcome page, and edit this page. In edit mode, go to the end of your Welcome page (you can delete the welcome page text also if you don't need it), and paste the content of your clipboard. The lines of code will be displayed at the end of the page. Save the page.

Now your blog is displayed at the bottom of your welcome page :-)