I've bought bitcoin and some altcoins. I'm also interested in buying gold and I might buy a small amount. The biggest problem I see with gold is that if you have a lot of it, how do you store it? I doubt I would want lots of it in my house.
I am investigating this for longer time now. Clearly answer is: you must store it in offeshore account far from reach of uncle Sam. Companies that deal with gold have storages like that all over the world. Canada, Caribbean, Hong Kong, Germany, Geneva, Australia, Germany ... so you want your gold to be in politically stable country, I mean strong place that means business. Some people say Abu Dhabi as centre for gold trading but I wouldn't use it.