You might want to look into the forum a little bit deeper than the first page and read some topics… Some will be very revealing for you. If you still have questions after reading some topics and then post something new or debatable. Not something that is discussed like 1000x times… Even on this page there is a topic on Russia and also there RJClayton describes how a Russian Turn one should look like…
Straving or either taking Ukr is a necissity! for the obvious reasons rjclayton points out! You want to use your planes and sub as well instead of let them doing nothing…
If you are playing without a bid:
Buy 8 inf
Strafe Ukr with everything, idealy Germany is left with one fight, retreat to Kar.
Take Manchuria, you can even bring a fighter from Moscow.
Attack the baltic and the Spain Seazone.
After this the game is pretty much over, because Germany can’t even expand to the east to trade cau with the russians, because Ukr is a deathtrap. EE will be under heavy pressure and WeU will fall in about 3-4 turns.