As a noob myself or someone that flirts with that title regularly at least here are a list of my crimes since I started. In the hope of getting a more lenient sentence I am pleading guilty on all counts.
(these are in no particular order)
attacking my partner in team games, I though that i had got over this but the little voice spoke to me again the other day (sorry yorkie)
not talking to my partner in team games (sorry Amanda)
not listening to my partner in team games even though they are making sense (sorry Ali)
pressing end attacks / end fortification without fully studying the map
Assuming forts are always unlimited and not double checking
Deploying on the wrong territories

(edit: just did it again while writing this

)
Attacking neutrals for no obvious reason or gain (i do this a lot

)
being continent obsessed in esc. games (i have coped on in this one

)
not watching the clock especially in speed games
linked to the above point wasting time writing my views on life in game chat in speed games
not taking simple 1 or 2 kills and going for the big kill always shock and awe style
agreeing to alliances that are detrimental to myself
running into blind allies instead of planning my deployments in advance
pressing auto attack despite the risks involved
not making sure i get a card when 1 is there for the taking
cashing too early in esc
playing maps like aom as if the bonuses make no difference
not forting the right territories to protect a continent (this happened me as recently as yesterday

)
thinking in the now instead of multipe moves from now (ala chess)
underestimating and overestimating my opponents because of their rank
trying to compete way outside my rank
assuming as I am very good at the board game this will be the exact same
entering games against unbeatable players like Amanda1
failing to get to know the maps I'm playing and their little idiosyncrasies.
going for continents with huge bonuses like asia in classic without realising these are almost impossible to hold
missing turns because im not watching my game order (new update should see this reduced)
OK I have learned from some of my mistakes I hope others can to.
PS having read this list can anyone explain why I'm not still a cook

Don't now why people on here don't like being cooks, remember under siege: A former SEAL, now cook, is the only person who can stop a gang of terrorists when they sieze control of a US Navy battleship.