I haven't tested Blender on Windows yet, but on Linux it is just amazing for a free programm.
I'm just about to finish my first mesh. A human base 1k tris which I intent to use for my Glest mods. Took me 5 days.
Almost half that time was for studying human anatomy and almost another half for finding a good mesh topology and aktually creating it.
The rest was to lern how to use blender (;
One tip: it might helps to temporarily forget what you now about other programms's funktions.
Blender noob to pro is probably the best tut available, just google it.