So i'm new to this server and donated to get that queue skip premium. I just started playing, am 18lvl atm, and not sure what to spend those 10 coins for. I'm considering getting gold, as getting money for skills/mounts early in the game is pain in the butt. So i would like to hear your suggestions.
You can keep the coins, make gold from quests and collect materials for different proffesions while you are leveling. When you get max lvl you can easy farm some eternals or something else and make more gold, also after that if you collect some gold you can sell it for coins via trade system and you will get some BiS weapon or other item. (23 coins for BiS item)
Use the 10 coins to buy gold on trading.
Its pointless to buy gear for the coins before end game BiS gear is available and it will take at least like 6 more months until they release that.