Cryptoncurrency is a good source of income and in the mean time it is an risk factor too. For newbie i suggest them they should start with signature campaign job. Because it is an easy, trusted and regular source of income too. And it will be good if they choose bitcoin signature campaign job. They should also try different options like online small cryptocurrency related job or mining, trading etc. If they want to invest then i suggest them they should try bitcoin for short term investment purposes but it is risky too. And for long-term investment they should try Ethereum.