Le site investopedia.com est-il sûr ?

That's funny because when you make a google request connected to financial/investments/trading, whatever else, investopedia is the very first resource with the answer, ha. That is the reason why I am inclined to trusting it, because everything that is written here is correct. There are tons of materials about the financials, and even if you don't want to get into trading or investing, it would be useful for horizons broadening.

As I say for investment wikipedias: "A wiki for investments and market factors. Site is true to its name and description, secure and user friendly. WARNING: Like all wikis however user must be aware of the information that is added. Wiki or wikiinvest articles are only as good as their writers so always do your own research, verify articles and resources at the bottom of articles. Point of Advice: Its your own responsibility to verify information that you accept or are going to use. Always verify your sources and data before investing to properly assess risks."