By using the scroller on your mouse. Scrolling up makes the selector in your hotbar go up, and scrolling down makes it go left.
Put it in your quickbar and select it so it is in your hand. Hold the right mouse button down to eat it.
You can. Either scroll on your mouse or use the numbers
No. Minecraft is currently avalible only for select moble devices, xbox 360, mac, and pc
You download a texture pack, drag it into your texture pack folder, and then select it through Minecraft.
esc key then select options
the 1 - 9 keys
There are lots of things that make sound in Minecraft, so it could be a number of things.
It is called Minecraft because the primary things you do in Minecraft is, well, mine and craft.
No, though one of the key things about Minecraft is that you learn to teach yourself things... but if all else fails you can check the Minecraft Wiki.
Go to a site called minecraft wiki
Yep! You just log-in and select in browser play.
After you log in, select Single Player and select "Create New World" to get a new random map.