Research gold market is buy rs gold doing before investing in it. There are predators out there in order to get you investing with them. Don't over your strategies. Avoid gold futures even though they are popular. Futures are complicated and very volatile. You can sometimes lose a lot of money pretty quickly if you're not sure about your moves.
Let the more experienced investors get into such complicated transactions. Sell gold coins when its worth the most. The stock market goes up and gold prices change every day. Sell gold when the stock market is doing well.
Gold isn't an buy osrs gold investment you should try and time. You should instead think of it more along the lines of wealth insurance. If you want to attempt to time your investing, buy when the gold market is quiet.