Press the inventory button. Usually E or Tab.
Placing items in Minecraft is usually done with the right mouse button.
For the PC, right click to place a block. For the Xbox 360, you hit left trigger on the controller. For the iPod Touch and the iPhone, you tap the screen when facing a block.
Using the right mouse button, thus making it difficult to play Minecraft on a single button mouse.
hold down the control button as you click = right clicking you can also change the control settings. I have R as the place blocks button, and T as the destroy blocks button.
If you have a 2 button mouse it will be the right button. Just click it once for one item.
Click on your piece of armor, and place it into the corresponding armor slot to the left of your character in the top left of your inventory. Another, easier method, is to hold down Shift, and Left click the armor in your inventory.
Place the bucket in your active inventory slot, and hold the right mouse button.
press 'command' if i were you, i change the minecraft settings so you need to press the button 'c' to place blocks
The default button to place down blocks (eg. bricks) is by Pressing MOUSE2. (Right-click)
There is a button on the right side on the place where the screen interlocks with the keyboard. It is a circular button that lights up when you press it. It is the button behind where you plug it in to charge.
By that i guess you mean place a block in which it is, RMB (Right Mouse Button). Ryan
Your toolbar is the set of nine inventory slots at the bottom of the screen, the ones you place there for easy access.