Earnings without investment on Yandex services

The word "Yandex" know everything, but not everyone knows that it´s not just the search engine. Yandex have a lot of all sorts of services, some of which are tools for webmasters, part - provides services to the people and a part of services that allow people to make them without any investments.
What would make your life easier, we have compiled the services on which you can earn money without investment, and put them explanations and recommendations.
Study, come to life, and make money without investing a single penny!