It is not just about planning, you can still plan and end up into the wrong project. What can prevent beginners going into wrong investment is to first get understanding. Some people are so desperate in making money and whatever they come across what seems like what can generate money, they just make conclusion to go into it without having proper knowledge of how it works.

Having in mind to get understanding first will surely help one to know the better investment like bitcoin rather than going for every random investment hoping that it is reliably. 
The problem with beginners investing in wrongly is the urge of making money so quick which they never have any interest to know better.