Why are people mentioning total war games? i am not very good when it comes to strategy games yet i thought i would give Napoleon: Total war a try and wow, i found it so complicated it wasn't even funny, having to manage taxes, stop riots, repair buildings pay allies, trade etc is didn't have an easy learning curve at all which is what the op wants. having said that im just a bit numb when it comes to strategy though i tend to do something and watch the charecters do as i command all while im being attacked somewhere else and i dont realise until its too late lol.
Starcraft 2 i have tried and got obliterated by so called novices it puts you against in multiplayer and the whole different faction and units is confusing i find.
games i recommend are
Company of heroes currently £6 on amazon for the anthology. very good game win or lose online and its WW2 setting what's not to like about that?.
RUSE, very easy to get into and to learn and has an easy layout for your buildings etc, can be very tough online though as not many novices still play it.