I would say the most important post to read before you register for uk3 is this one:

Where you settle and the benefits you have are very different depending on your chosen location so you might want this to suit your style of play.

A few screenshots from .com Ancient Europe to wet your appetite -

The start -

The minimap (the red ring is populated, spreading outward like on a normal map)

UK of course (odd - no Anglesey, Isle of Wight, Isle of Man - but we got Lundy!) -

Italy -

The Nile (curiously the Suez Canal features in ancient europe...)-

Roma, at coords 0|0

Mt Etna -

Sand dunes on the map (you cannot be placed here from the start) -

Sandy village -

Victory points scoreboard by alliances -