Perhaps signature campaigns are a good way, they are not difficult for beginners, and also may help the experienced users.
But for beginners it takes alot of time to build up forum activity to get in useful campaigns but that doesn't really matter it is indeed an easy and safe way to receive bitcoin. But I would still recommend to trade with altcoin since it yields high profit.
There is no guarantee that a certain individual can easily earn money trading altcoins, in fact that is a very risky job with lack of knowledge and skills because you need to put up a capital to be use in trading, it is like gambling if you are not that good in making consistent money.