If you're new at this and a bit confused as to which buildings, boosts and bonuses apply to which resources, here's a table that could help  a bit:

(open image in viewer)

The table shows four sections:

• Section A1: (lines 1 to 6) - the resources available per hour from all production buildings.
• Section A2: (lines 8 to 13) - All additional buildings providing production bonuses.
• Section B: (lines 17 to 23) - Temporary boosts and bonuses which may be activated.
• Sections C and D: (lines 27 to 37) - Fixed and temporary bonuses which reduce grain consumption.

If nothing else, the table should provide an idea of which buildings and bonuses a player should be upgrading, depending on his or her resource needs.

Cheers
p:

Note: 

• All values are assuming that buildings have been upgraded to their max. level.
  
• Other methods to reduce consumption, such as unit selection, haven't been included above.
• All of the above applies to plarium.com servers, FB servers may have different values for bonuses, upgrades, and so on.

PS: Have I forgotten anything? Hope not :-).