You should work on getting expansions for each Team member. Work together to clear extra Gold Mines of Creeps. If the Gold Mine is surrounded by wood, use wood clearing options to help clear room for an expansion for your teammate if they need help. Keep in mind that their efficient economy also
helps you, so help them out if they need it. Expansions can often determine who wins the game. If you don't have enough money to upgrade and build additional units it's usually the end for you. However, you do not need expansions if you can prevent the enemy from expanding and can
beat the enemy with just one Gold Mine. On some maps the Gold Mines are smaller so you will have to expand earlier. Defend your expansion when attacked. You can help delay the enemy by building towers around your expansion. Don't build too many however because they can be killed with Siege Units. Kill enemy HeroesFocus on killing enemy Heroes during battles. Don't overly focus on killing the Hero if the enemy is good at running away or is healing itself. Some top players say you should never target enemy Heroes unless you know you can kill them. Gain control of Neutral BuildingsNeutral Buildings can be very helpful. Goblin Merchants can provide many good Items. Mercenary Camps can provide useful neutral units, such as Troll Shadow Priests which can heal your army early on. The Fountain of Life can be very useful for healing troops after battle. Take advantage of Neutral Buildings to their full extent. Sharing ItemsDon't
be greedy when it comes to items. Sharing Items can be very effective in team games. Divide items among who can use them best. While some argue it doesn't matter for normal Tomes, you can take better advantage of Tomes by allowing Heroes that match up with the Tome to get them. A Far Seer or Archmage should receive a Tome of Intelligence. Give melee items to melee heroes, and give caster items to caster Heroes. When passing items out it's best to give them to someone's first Hero rather than giving them to your second Hero. For example if an ally has a level 5 melee Hero don't give it to your level 1 second Hero which is also Melee, instead, give it to the Level 5 Hero. Sharing ResourcesKeep in mind that you can share resources with your allies. If you need money for a Town Hall and don't have it, ask for money
from your allies. If you find you have way more Gold or Lumber than you possibly need, ask your allies who needs some extra Gold or Lumber. If one player is advancing quickly up the tech tree to higher units, you may find it useful for everyone on the team to donate
money so that player can reach the higher units more quickly. When you send resources to another player, those resources are decremented by the upkeep of the receiving player. This is done to prevent 'farmers', players that exist purely to generate resources for others at a higher rate than they could themselves.