Hello,
In team, you share the vision, what the unit see. If you have a radar dome on your minimap you will see what all unit see including your teammate's units. you still need your own radar dome to unlock the minimap.GPS technogy is shared is (once again) you possess your own radar dome). So one gps for an entire team is enought.
Regarding sharingmoneytheir is 2 way :
- Using supply truck : to save a player from extinction, otherwise useless, paralize your vehicule production to give nearly nothing to your opponenet (500)
- Giving your own ore truck order to unload in your teammate ref. This is powerfull because you can dedicate your own truck to mine for your teammate.
Edit : there is a discord server for beginners with how to play the game and lots info tips :
https://discord.gg/SwTTC8H. You're more than welcoe there. And btw your post made me realize that I lack info and tips related to teamgames.