Wood Elves? I think they are really not suited to be your first army. Of course it's up to you, but if I had to suggest, go for:
- Empire. The Empire has a nice balance of units. Enough shooting power, mages and possible ranks of sollid infantry backed up by eventual Warmachines. These armies are evry steady, backed up by sufficient artillery if you want. An all-round army, you can go all kinds of ways in the army list. This is a nice army so start with.
- Orcs and Goblins. It's just crazy fun to have so many options. Their Heroes and Lords take up 5 pages, that's as long as the whole army list of the Vampire Counts. They are a nice bashing and predictable army... predictable as in being unpredictable (always). They either mock about or crush the enemy in a big Waagh (as they call it). It's more of a Close Combat army, having a bit of magic and shooting, but ranks of Orcs in Close Combat are really present. Trolls, Chariots, Giants are all nice hard-hitting units, next to the funny Squig Herders, Night Goblins, Big Uns, normal Orcs, Black Orcs, Fanatics, Goblins, and many more!
- Vampire Counts. They are a nice army. They have quite an assortiment of available converting material. You can practically convert and model anything you want to. The VC model range doesn't look very bright though. But they are soon to get a new model range. I suggest this army because they cause fear and
will never break (except Ghouls). That's so reliable. Also, fear + outnumbering + a won Close Combat Phase means an auto-break for any opposing unit (except unbreakable ones). This army is mainly fixated on Vampires and there are 5 bloodlines. Having bloodline powers as well next to the Magic Items. VC armies focus on outnumbering their enemy and causing fear in their enemy's ranks. Fear is their strongest strength.
- Hordes of Chaos. Simply for them being so strong. Nice army to start, but also difficult with Chaos Warriors and you'll probably get outnumbered pretty fast (msot times on the beginning

). Nevertheless, it is nice to field a strong army, knowing no model will fail killing. Perhaps as a second army? The army also has reinforcements in powerful Daemons of the 4 Greater Daemon gods. You can even field one of the Greater Daemon incarnations!
- Skaven. Skaven easily outnumber enemies and can be very dangerous. A lot of people complain about them being easy to 'cheese' out, meaning to make it very, very strong. But for only 40 points (which is about nothing) you can get 20 models already! Although they aren't the best unit around, the Skaven focus on overwhelming their enemy and to exhaust their enemy units with cheap and big units (called Clanrat Slaves). The Skavens use magically enchanted Warpstone to mutate themselves and to wage war with them. You'll often see small skirmishing elite untis next to the main army, which are on most occasions more dangerous than the main blocks. Powerful warmachines aid the main Skaven force; Doomwheels, Screaming Bells, Warpfire Throwers, Ratling Guns, Jezzails and Warplighting Cannons.
- Beastmen. (also known as Beasts of Chaos) They are the arch enemies of the Wood Elves. They spawn forth, said to be created by Chaos as a mix between Daemon and animal, and vie to destroy anything good. Their armies consist of big beasties able to crush anyone. Dragon Ogres, Minotaurs, Dragon Ogre Shaggoths are all examples of the big ones. Next to that, they have probably one of the best ranked units in the game who function as Skirmishers; Beast Herds. Those Herds also have a special rule detailed as being able to flank the enemy army later in the game (so not beign placed on the board on the beginning). The Beastmen army aims to destroy their enemy slowly, having good Toughness and Strengths to sustain mere mortal wounds.
These are practically nice starting armies in my opinion. You'll see most armies are able to be horde armies, meaning they often outnumber their enemy 3 to 1 or even more. This means this can cost you a fortune on money (except if you can get them cheaply, say, on Ebay).
In the end, it's up to you. This is jsut my suggestion, and I think some people will agree with the stated armies (except Hordes of Chaos perhaps).
I hope your choice will do you good and that you will not hesitate too much.
It depends on what you like; do you like playing games in general? Do you like painting, modelling and converting? Do you like writing stories about your army and then game with it? Do you like to paint armies and then sell them?
Cheers,
-MvC