Here are a few "Crazy Frog" tips for beginners...
(I'm nowhere near the best strategist in the game... But these basics should help you get started)
On averages people will win over 10% of games regardless of how good they are... just the dice can do that.
Playing in Multi-player games are smart... even if you only win 1 out of 10 games you may get more points from that one game than if you won 2 or three games against a single player.
For the next few games play simple maps with a bunch of players.. say 6-8 player games.
Play on the same couple of maps that you like over and over again... You will get a feel for the map and understand its strategic points.
Round One... Deploy but try not to attack... ( a 3 vs 3 is an not really an even swap and you will usually end up loosing valuable men at a critical time... leaves you more vulnerable.
Look for a way to gain advantage and a few more points each round... deploy and reinforce toward a goal in the 2nd or 3rd round.
Example: On Pearl Harbor Map you may be able to get a bonus by taking another AA batery... or another Plane... or another two ships..
Another Example: on map D-day at Omaha Beach you can get a bonus from owning two of the bunkers. or all three of them... Or a bunus from owning each ship with its landing crafts...
Watch out for traps... on D-day for example you get a Negative 1 if you own both the Airplane and its corresponding parachute... So that is one place you do not want to hold onto... and once you have it.,.. noone else is going to kill you for it... they would rather see you crippled round by round than to kill you off of them.
Try to gain good Defensive Locations... Example... Feudal war look at "Feudal Empire".. there are only two avenues for attack... at FE 5 and 7
If you attack from one side you may have to go through a pile of 20 non player troops just to attack the defenders army... So it pays to Plan your defense...
Attacking with greater than 2-1 odds will throw the odds into your favor normally. So if you are going to attack a 3 then try to attack with a strength of 6 or better. A 5 may usually win but in the end you will not have much left after the fight to defend with... Remember its not just winning a skirmish... its having enough troops left after the skirmish to defend with... and eventually win the war.
Speed of attacking: On some maps you need to Blitzkrieg... and on other maps you just have to be patient... Watch the other players and see what they do... Especially the Higher Ranks... like Majors and Colonels. If you see them playing it cool and patient in round one... Its not a bad Idea usually to follow along. Don't feel like you have to do anything in particular... You can deploy and wait till another round for the attack if you like... Its your game.. Play it your way.
Hope these thoughts help...