There are different ways to earn tokens and coins without any money involve.You can earn thru airdrops but most of them are scams,you can participate in bounties also to earn money but be careful there are also scam project.
In addition we can also join airdrops and new coin prizes. There are actually a lot. You can get tokens for free, it will only spend your time and energy.
the main thing is that we can take part in various bounty campaigns provided by an ICO project and we can choose and even follow everything if we have the time, and if you have capital you can assemble tools for mining.