Many of my friends are working with the youtube and it has brought a lot of money to them. Have anyone tried this method yet?
Go with your plan of investing into ICO's though it may not give you steady income but once the ICO is going to be successful you are going to be good and make your effort valuable upon investing there. Monetization in youtube is a good way to have steady and passive income, you just need to make your videos viral. You need to have thousands of views to get decent income and if you were able to reach million views per video, then your near to success.
Yes, investing in ICO is one way to earn money and it is a great idea to invest their, always make money works with you by investing to a lot of investments that you think is a good one, but of course don't forget to hold bitcoin.
It's kind of hard to make your videos go viral. Most viral videos are dumb and you don't want to be posting stuffs like that on the Internet unless you're desperate for money. You simply need to have a certain niche and then keep on posting. There are people that make a huge amount of subscribers and then stop posting so they lose subscribers. These subscribers expect to found a new video from you every single day or after a couple of days. If you stop posting, you can't expect them to watch the same video over and over again.