Your focus must be on stone. It is an extremely common material, and you are likely to find outcrops of stuff on a surface. Wander for some minutes in either direction and you must find adequate to allow you craft a furnace. You will need twenty stone, four wood, and three torches to make a single one. You can also place it in an environment in the same way as a making bench. With a furnace at your disposal, you will be able to smelt precious ores such as gold, iron, and silver. By visiting at http://terrariaforpc.com you can have a better understanding which ore should you pick to improve your ranking in this game more efficiently.
Now you have got a base of operations, exploration can easily start. The most valuable ores are miles from a surface. You will have to head deep underground in order to get paws on best available materials for building. You can wander the world in search of a sinkhole, or begin digging within few of some useful ore. Copper and stone are fairly common, but to start with you will need to keep your eyes open for iron. It is quite easy to miss as it looks similar to stone. Iron veins are slightly browner and darker than stone.
You can also smelt three blocks iron ore into one single iron bar. Iron bars can also be used to craft numerous items, but a new pickaxe and anvil are very good places to begin. You can also make an anvil out of 5 iron bars at the workbench. You will need twelve iron bars and three bits of wood to craft iron pickaxe. This would allow you mine faster, speeding up a game considerably as per the guide on http://terrariaforpc.com.