All games are playing WA with the computer controlling the rest. Supplies are set to advanced with auto distribution.
1. First game. Didn't realize I had to manufacter supplies. War stalls out real early as none of my units can move after about turn two.
2. Second game. Much better then the first as I actually like you know, make supplies. I misunderstand the research trees. I think that each point I put into it automatically raises it and the beaker colors are how close I am to the tech level everyone else is it. Thus I put research points into many things but never actually make any breakthroughs. As a result the United states gets horribly stomped in the pacific and australia falls. New game

3. Third game. Ok I think I got a handle on things. I forget to research transport capacity until about one turn before D-day. D-Day is called off since all I can land is about 2 tanks and a troop. I attempt to make a landing in Norway instead, but my men are slaughtered on the beaches. Allies call it a day.
4. Fourth game. Much better! Start researching stuff I need at the beginning and am started to have a handle on how the turn flow is. I also figure out that I should move all my transports to safe locations once hostility starts instead of watching the axis pick them off one by one

Questions :
How do I take islands in the pacific back from Japan. For instance, I have several islands near Australia that the japanese have taken but have no troops or water vessels. I put a transport line to the island then attempt to drag men/tanks onto the island but the game will not allow me to. I can drag the troops into the sea zone with the island, showing that there is a supply line to it.
Can someone explain to me how production/capacity/population work on the productions screen? Basically the three middle values. I read the manual but am still lost, especially with regards to population.
Is there any chance that the supply amount can be displayed on the main screen for easy viewing at all times? Currently, I have to click a unit to move it in order to see the supplies I have.
Can there be some sort of tool or way to figure out the supply/army movement chain made by convoys. Currently I have to take a troop and drag him around to figure out where my convoy line has been broken.