If you just want to put a photo and maybe some text or link on your front page - put it in a block.
Make a Simple Portal block using bbc code or custom html type standard blocks. Set it to appear on the portal page.
In the block when editing, all you need to do is put in the code with the url of your photo.
You can find good examples searching the internet for something like ' bbcode image link', or ' insert image html'. Your choice which you prefer - bbcode or html.