Honestly, I believe that Greek are harder to play than Norse. The buildup and unit system of Greek is pretty "traditional" and therefore easy to understand, but if you want to be good with them they are not easy. They especially have a difficult econ to micro, with the regular need to replace granaries/storehouses at cost and manually move your vills to another resource. Norse can be automated in this respect once you define a hotkey for the "Guard" command and use it on your ox carts. You can then just waypoint your dwarves over multiple gold mines, and the cart will follow them on automatic as they move to a new mine on their own when the old one is done. The cart will not always deploy optimally this way, but it is way better than having no drop site.
Eggy and Greek can do the same by pre-ordering a storehouse at the new gold mine using waypoints, but only Greek has to pay the corresponding resources in advance, so this is not always viable.
And for the forests, how often does it happen to a Greek that his last storehouse is miles from his wood cutters who have dug deep into the forest without him remembering to give them a new storehouse? An ox cart on guard mode will never allow the distance to his wood cutters to grow too large.
Norse is quite different and requires getting used to, but then you have an easier econ micro and a more efficient econ in general, because of dwarves and the generally closer distance of carts to vills. This allows you to focus more on the really important tasks.
So I recommend beginning with Greek to get a basic grasp of the game and then changing to another race to build up the first real skill. Atl is an inviting beginner race.
Darkness is a state of mind
Valor is the contempt of Death and Pain. (Tacitus)
Problems worthy of attack prove their worth by hitting back. (Piet Hein)