I'd rather have Warren Buffet's soul than many other of the rich listers - the man lives in the same house that he bought as a young man. #KeepingItReal
You are most welcome to trade world,For stocks - Local market is best for startup ,than you can enter international market.Company research are more impotent for investment. for forex learn business and currency status,you can invest very small amount for startup.
In my view both stocks and forex are very volatile but if for stability stocks will be more safer. i will suggest you should invest in tangible things like land, gold or even in others business.
domain names are a solid investment, i advise researching carefully but the alternate TLDs (besides com/net/org/info/biz) are starting to get some proper attention and SEO opportunities.