Board Thread:New on Terraria Wiki/@comment-24992582-20140527225703/@comment-24821572-20140527231715

For starters try looking at the strategies at Eye of Cthulhu.

Generally it goes:

1. Buff potions(iron skin, thorn, bow potion)

2. Platforms(30 blocks long and 3 rows) in the air so that you can shoot in 360 direction without getting restricted by blocks, and maneuver yourself better to dodge its attacks

3. Campfire and Heart Lantern

4. At least gold/platinum tier-armor and bow(Silver works as well but gold is better)