These are the ways you make money from cryptocurrencies (Bitcoin and altcoins).
#1 you can scam others by lowering them into false opportunities. Normally the promotor would use results and proceed from the scam to entise the innocent but never 100% shows how he/she makes money.
#2 you can make money from cryptocurrencies by buying and holding and wait for the price to be appreciated then sell to gain the profit .
#3 you can Trade(buy and sell) cryptocurrencies against each other to profit from.
#4 you can mining cryptocurrencies to earn residual income. Either by you purchasing mining equipments and hardware to setup own mining rigs and connect to a mining pool and mine on your own. Or you can participate in cloud mining (cloud mining is where the fake opportunities at this is scammers playing ground) so you have to research and investigate before you invest ). You can purchase mining hardware and have third party hosting couple companies offers hosting where you ler you hardware store there and they charge a fee for maintenance and overhead .
#5 you can stake cryptocurrencies - these are cryptocurrencies that do proof of stake .you can earn passive income from staking as you receive a % bonus on your holders as you are working as a masternodes.
#6 you can earn cryptocurrency by accepting cryptocurrency for your services etc .
Becarful of scammers they plague the cryptocurrency and blockchain technology space as they see vulnerability within the space !
Learn gain knowledge and take baby steps along the way!