There are lots of resources available online that you can use to learn about Bitcoin. One of my favorite Bitcoin books to read is “Mastering Bitcoin” by Andreas Antonopoulos. The author has a good reputation in the Bitcoin community and his ability to breakdown complex concepts into simple layman terms makes his work a staple in every newbie’s journey in the crypto space.
 
Newbies, stick to only Bitcoin. Limit your investments in altcoins to a minimum as much as possible. Spreading your investments amongst various altcoins will not increase your chances of making profit rather it can prove counterproductive and you may lose everything.