[Amishcellphone]

I hate to reiterate a question previously posted, but since you havent said anything about it I supposed it needs its own post.

Eldar 1000 pt lists basically break down into 2 archetypes:
Mechanized
Foot slogging

Mechanized armies rely on a high number of transports and other units that move over 6".

Examples of this in the Eldar army are:
any unit that can use a wave serpent, swooping hawks, jetbikes, vypers, falcons, prism cannons farseer on a jetbike, autarch on a jetbike, shining spears, warp spiders.

The advantage of this style of army is that it's so highly mobile that you can weave over or through terrain and take the fight right to the enemy on your terms, not theirs. This is a huge advantage. It's also useful for claiming table quarters or loot counters since on the last turn you can pretty much contest the whole board with all of your units.

Footslogging armies rely on some beefy units to absorb fire, while many static firing platforms unleash a torrent of fire taking out the enemies strongest units first and then picking off the remains.

Examples of this in the Eldar army are:
Guardians, pathfinders, warwalkers, dark reapers, wraithlords, the avatar, farseer with fortune, guide and spirit stones.

The advantage of this kind of army is that you present your opponent with several large targets, such as the avatar or wraithlords, and rush them towards the enemy. Meanwhile your static firing platforms are allowed to fire unmolested for a few turns hopefully turning your opponent's main threats into dust.

These are the two basic archetypes of the eldar army, but this does not mean you have to play like this, these are just starting points, where you go from here is up to you.