I'm not gonna recommend any particular investment but something to keep in mind is that taxation has an important impact on overall gains, and it's different in

I'm not gonna recommend any particular investment but something to keep in mind is that taxation has an important impact on overall gains, and it's different in every country. You need to learn the details relevant to your country of residence and take that into account. Most advice you'll get in internet assume you're in US and your country's taxation certainly works differently in many ways. For example in France when you buy stocks directly, the taxation is less attractive than if you buy through other well-defined financial instruments which give you lower tax rate after 5 years. In US, you have "short term capital gains" and "long term capital gains" etc. Such distinction doesn't exist in most of EU.