I agree with all that you write.
I prefer a "new" friendly player who can take instructions any day from a skilled "rambo style" player who does his race and doesn't help or communicate.
A few nice pointers for a new player:
1. Read the strategies section on the forum. There generally is a build or two for your favorite demigod that can give you some hints and/or inspiration.
2. Get healthitems. These give you a bit more room for mistakes and more time alive = more experience faster.
3. Practice offline. It may not be as fun as online play but it's the perfect place to try out new tactics, items, Demigods and builds. Sure the AIs ain't that hard but you will get to learn to play your favorite Demigod fast.
Hope this helps and remember to always be nice to the oposing team aswell as your teammates. Winning isn't everything as a loss vs a nice oposing team is still a nice time spent playing.