As i said on my previous post in some threads with the same topic of you, i only recommend bitcoin and ethereum. Because this two types of cryptocurrency is the best and most profitable cryptocurrency that i really trust since i started on investing that already give me profit and hopefully it will continue to give me more profit in the future.
Yes, bitcoin and eth are the obvious choice for a beginner. However, as you can see in the thread everyone has their preferences and choices of coins. It's good to follow these suggestions, but it's definitely worth your own research to select the coins for investment well and wisely.