How do I pick the right cryptocurrency without becoming an expert in cryptocurrencies?
As money, security is paramount. Bitcoin is still the safest and most proven crypto, despite what others claim. The network has the most miners, which makes attacking the network next to impossible.

Bitcoin does have a few drawbacks, but these are being fixed 1 by 1. Solutions like SegWit and Lightning Network are major advancements.

There’s nothing wrong with supporting Bitcoin as your first coin. Over time you can learn more and maybe get interested in other coins, but I find myself always going back to the original Bitcoin.

The fact that BTC was invented by an anonymous inventor and has no single leader, is also a major benefit.