I'm very new to this game and I'm struggling with some very basic concepts so I'm hoping for some help.
1) Looking at the City Screen, if there is no circle around a tile to indicate that a citizen has been assigned does that mean that the tile is not generating any income (food/production/commerce) for my city?
2) I finally worked out that Resources have to be linked to my cities by road/river but what about standard farms/mines/cottages?
3) There lots of tiles along the coast that appear to be able to generate food/commerce - are they?
4) I can't improve coast and water tiles - is that because I haven't advanced enough to access the imporvements?
5) As I understand it, I can't actually stockpile food/production, just generate more than I'm using?
My familiarity with the Age of Empires franchise is severely messing with my comprehension of how Civ works - Civ is significantly more complex.
1. Yep, no circle around a tile means that no one is working it (meaning no production from that tile).
2. Only resources need to be connected to your trade network, although you do get food/hammer/commerce benefits from them even they are not connected.
3. Yes, coasts and oceans do generate food and commerce.
4. Coast and ocean can only be improved if they have the right resources (fish/clam/crab in normal game).
5. I don't quite understand your question...