How do you pick up gold in Minecraft?

I am assuming are talking about the gold blocks you mine?

You simply need to put them in the smelting slot (top) in a furnace and power it with something like coal, charcoal, lava buckets, and other things (this is on bottom). You should get gold ingots from it. You can create gold blocks by filling every slot in the crafting table.

If you mean the gold blocks that you make, then put the block in a crafting sqare and out comes 9 gold ingots