Internet is full of information but you should know what you are looking for, so reading about the different areas/sectors and picking a specific will help you. Cyber security is many things. I would suggest not to waste money on courses and learn the basics from the free ones or any live academic courses where you leave (this is the best option) . Don't start from tools and ready to use exploits, except if you want to do it for a hobby. For going pro you will need a good understanding on networking/internet, programming and operating systems to start.
If you don't have any prior experience with cs and no interest to do it for a living, I would suggest to not even start. It is a very cool skill to have but too time consuming.