These were a new addition in season 2 they were confusing to start with but I think I have enough information to be helpful.
The blocks not only provide you with materials they are also your pathways to new cities. Each block must be touching another that belongs to someone in your alliance. Pay attention to where paths etc are going and try to stay on target. The first city is a free capture your path must lead from that first city.
When you first start you will have no immunity and no blocks the idea is to capture the blocks in order to mine the red and blue crystals to build structures that help you increase your immunity. The higher your immunity the higher the blocks you can capture are. This in turn gives you more crystals per hour to increase your structure levels.
Immunity is necessary when taking cities and as claiming territory is an important part of the game building your clinics is very important. You cannot help capture a city if your immunity is too low no matter how big your teams are. There are 3 of these available and all will be needed if you intend to reach the higher cities. These are your priority you need to get your immunity as high as possible as quickly as possible.
These help to increase your block cap allowing you to have more blocks, this in turn helps increase your gathering of crystals per hour providing much-needed materials to further increase your structures. There are 2 of these to be built to achieve maximum blocks.
Building this structure improves your troops’ attack power when capturing a block, increasing your chances of capture and lowering the body count.
Building this structure improves your troops’ defence when capturing a block, lowering the damage taken and increasing your capture chances
Building this structure improves the hp of your troops giving them a boost in health, and increasing your chances of capture.
This will gather some iron for you over a period of time all you need to do is collect. Great for boosting your resources to help expand your fortress while leaving your trucks free to complete dailies.
This will gather some stone for you over a period of time all you need to do is collect. Great for boosting your resources to help expand your fortress while leaving your trucks free to complete dailies.
This structure will increase your storage for the red and blue crystals used in buildings.
This structure will increase the upgrade and construction speed of the season buildings.
This building will help increase the treatment speed of your injured troops.
This building will help to increase your travel speed while capturing blocks.
At the beginning of a new season, you will need to hit the ground running. No doubt the bigger stronger players will capture cities quickly and keep moving forward you will need to stick with them but be sure to keep farming blocks as you go.
Make sure to ask questions it’s the best way to make sure you are working well with your Alliance.