My friend iam too like you, but recently I saw a channel name called" Take Action". The vlogger there explain you all about digital marketing SEO affiliate marketing without blog zero investment.
But u need to have a desktop computer or laptop and a mobile.
Try to check his channel, iam waiting for my notebook microsoft to arrive in this month, I planning to follow few things about the channel.
We are in same boat to earn little money..all the best