Create related content

Hi,

Need someone to make display link to related content as in blommberg page (http://goo.gl/OEUUwi); when you scroll the page, a small item shows on the right side.

I want to display 2 items, one getting from the groups module and another from the artists module.

The relation is based on the tags I use when creating the page, the image is the one set as thumbnail.

I should be able to control if shows 1 or 2 items (no need to put it in the dashboard, just have to tell me on which file should I go to modify)

Please bid.

Thanks