Many people that just started using Bitcoin, does not really understand How Bitcoin system works, that's why most of them make common mistakes, those mistakes includes:
1. Most beginner rush to buy Bitcoin because they heard that the price goes up, they don't even bother to understand the system before investing.
2. Most beginner does not protect their wallet, if your seed phrase is not protected and some has access to it, it may make you loss all your money, To avoid this type of mistake, write your seed phrase in a notebook and hide it where no one except you will see it, to avoid losses.
3. Many beginner keep their Bitcoin for only exchange rather than their personal wallet, if anything happens to their exchange they might loss all their money.
4. When the price of Bitcoin falls, many people usually panic especially new Beginners. Bitcoin price goes up and down and that's the reason for panic selling.
NOTE: Because of all this mistake, beginners are supposed to understand and learn about Bitcoin before they can invest, so to avoid all these common mistakes.
You are actually very write, some of this points mentioned here actually puts beginners into confussion. However, this Bitcoin forum has played a major role fashioning bigginers on how to go about bitcoin investing.
It very important to know how Bitcoin investing works before going into it.
I had ugly experience when I started Bitcoin investing, I ventured into Bitcoin investing without being well guided, and then I have not joined this unique forum, I lacked experience in Bitcoin investing, and this inexperience made me to loose my Bitcoin. Based on this facts , don't invest in Bitcoin without knowing the rules guiding Bitcoin investing, otherwise, you make your investment in error.