Buildings Points All the buildings in the game have a points value calculated basing on their size, era and type (event and premium buildings are a bit more valuable than other, standard buildings).
Click the "Market" icon in your toolbar to go to the trading market. Click on the "Create Offer" tab. Next to the words "Your Offers", select the good and the amount of that good that you wish to offer for trade.
Medals can be used for: Buying expansions for your city. Buying extra attempts for the Guild Expeditions and PvP Arena. Negotiating in the Guild Expeditions. Paying crew members for Arctic Harbor and Oceanic Terminal. Unlocking defending armies and placing sieges in the All Ages province of the Guild vs.
Forge points are mainly used to research technologies and upgrade Great Buildings.
To help construct a Great Building, simply visit a city of one of your friends, neighbors or guild-mates in which a Great Building construction is present, and click on the Great Building. You may now donate Forge Points, and also view which reward you will receive (if any) for your current donations.