In order to not burn your fingers, newbie traders should find a good balance. The brokers should have good trading conditions, fast execution of course and needs to be well regulated and secured. I always recommend EU brokers more than others.
trading conditions depend on the own trading needs but since newbies do not have a strategy at the beginning, since they need to find their way, just care for having smooth conditions and Spreads below 1 pip. ... it often SEEMS that all brokers have below 1 pip in eurusd, BUT real conditions while trading are mostly others
so do not look on what they publish on their page, but check out via Demo or small live as well as research on the Broker.