To answer this question, the first thing you need to answer is: what do you mean when you say you want to invest in Bitcoin? Do you want to buy the currency in the hope of enjoying it? Do you want to invest in Bitcoin related companies? Do you want to trade your Bitcoins daily? Some people would like to invest their money in Bitcoin mining. In recent years, mining Bitcoin has been profitable only if it is carried out on a large scale. This means you will have to buy expensive mining equipment and, hopefully, have access to cheap electricity. Usually, the opportunity cost of not buying bitcoins is higher than that used to buy mining equipment. Any website that promises you something that is too good to be true is probably just a front for scammers trying to steal your coins. If you find a profitable way to run your business and want to host your mining hardware, never invest in cloud mining. Instead, you must always own the equipment and send it to a place charging a flat rate for your consumption.