Don't stick to bitcoin find some best coin that has potencial maybe a undervalued coin and research for that go to the website and see the updates about the project and see if the project is promising then invest that coin and wait for the pump.
Yeah you are right. Investors should also invest in Altcoin. There are many best coins which are very fast growing and it is obvious that in the future these currencies will give good profits. Bitcoin is also good but it is very costly compare to other coins. I think that Ethereum and Ripple are the best coins for new investors. They can make handsome money in the future.