Investment is always risky, It's on bitcoin or on gold or something else.If you can't accept the risk you can't gain profits.And thanks to the OP the information you collected, pretty well how to avoid these risks.Not only for newbie but also for the investor, It's a readable thread.Despite of risks, I believe in bitcoin still now because bitcoin doesn’t disappoint me.
IMO,Gold is not an risky investment and it is not to be considered as an investment most of the time because the value of gold is not increasing too much every year which is more like storage of value to avoid from inflation.
Gold only has value because people say it does, though, otherwise it's just another mineral in the ground. It's no different than copper or anything else aside from people wanting it. The same is true with fiat money, cryptos, etc. So it can definitely be a risky investment.