You cant, but in tekkit you can try searching tekkit on the web and try downloading it. Its actually just minecraft with more or less 31 mods in it its a bit complicated but youll get the heck of it when you play it.
You have to have a mod (modification) to make a cannon. It is not in vanilla minecraft.
Minecraft doesn't have projects. If you want to have a project to, say, make a cannon, just make the cannon. You might mean "How do I make a world", just press Singleplayer and New world.
There are good examples on ZirumsHeroTWR (YouTube) and kiershar (also on YouTube). Search up Minecraft Cannon on the Forums.
The only thing you can do with Iron Ore in Minecraft is smelt it in a furnace to get Iron Ingots.
There is no steel in minecraft. You're referring to iron, and you need to smelt iron ore in a furnace.
shears: [ ] [i] [i] [ ] i = iron
It is impossible to make iron in Minecraft, but it is possible to make iron ingots. To do this, you need a furnace, some coal, and iron ore, you put the coal in the bottom part of the furnace, and put the iron ore in the top, over time, you will get iron ingots.
google it and check youtube. They have some very good videos.
you make them...
3 iron ingots
you have to mine iron ore then put it in a furnace and you will get an iron bar called an iron ingot.
how can you find iron ore in minecraft.