Quick answers
How do I see coordinates in Minecraft?
Press F3 on Java Edition for the debug screen; XYZ shows your position. On Bedrock, turn on Show Coordinates in World Settings and they appear in the top-left corner.
How do I sprint in Minecraft?
Hold Left Ctrl while moving forward, or double-tap W. On controller press the left stick while moving. Sprinting drains hunger faster.
What does pick block do?
Middle mouse copies the block you are looking at into your hand if you have it in your inventory; in Creative it gives you any block, including ones with data.
How do I drop a full stack?
Hold Ctrl and press Q with the stack selected, or drag it out of the inventory window. Plain Q drops one item.
How do I switch to third person?
F5 cycles first person, third person behind and third person front. On controller press D-pad Up.
Why does double-tap sprint not work in Minecraft?
The window is a setting almost nobody finds. Options › Controls › Sprint Window is measured in ticks — seven of them, or 350 ms, by default. Raise it if the double tap keeps failing, lower it if walking keeps turning into a sprint.
Can you hold down mining in Minecraft without an auto-clicker?
Yes. Options › Controls › Attack/Destroy has a Toggle option: one press starts mining and one press stops it. Use Item/Place Block has the same, for eating, drawing a bow and bridging.