One of the mistake I have done and personally discourage for newbies is to trade and invest with 0 knowledge. Trading, and even in investing to long term, requires proper research and application of studies to make the trade more beneficial and minimize the risk. There are a lot of learning materials to this which are available on the web. As a start, you can also try on getting insights from influential traders but we should also have our own strategy. Learn on how to determine optimal entry points and respect your exit strategies. And when it comes to experience, we should always learn from our trading mistakes and apply it on the next trades possible. Do not be discouraged on loss trades and accept and cut your losses. This is part of the game. You will continue to gain knowledge from your experiences and eventually be able to have the confidence to trade in a more efficient and effective way.