This is a pretty good site for seeing the current prices for gold, as well as silver and platinum:
As for investing in gold, there are quite a few options, such as gold coins, gold bullion, precious metal IRA's, and the list goes on. I would suggest getting a free consultation from an investment expert, to decide what is best, based on your investment goals. I like Birch Gold Group, and it's totally free to call them: 1-877-506-6248, Monday to Friday. Good luck!
Birch Gold Group
1-877-506-6248, M-F, 11:30-8:30 EST