if you are a beginner, stick to top coins like btc or eth. start using small funds also as you are just gaining your knowledge in this area. you can't learn all the crypto trading tips & tricks overnight, it would take time even to spot pnd coins, or crappy ones.
Instead of suggesting top coins I will suggest about the coins which are having good volume (still you are right because top coins are usually having good volume).
The most important aspect of safer trading must be starting with small capital. I believe this is the important aspect where most beginners breach and then finding trading is too frustrating one. Small capital will ensure small losses because you're just a beginner in trading.
Unfortunately everyone wants to be a pro trader overnight which is the reason they are starting with big capital and then crying out when they are losing it.