All foreigners visiting Russia require a Russian visa. In order to receive one, travelers need a Russian visa invitation from a Russian citizen or a company (sometimes called a voucher for tourist visas), which is then taken to a Russian Consulate, where the actual visa is issued. Within three working days of arrival in Russia, the visa should be registered by the person/organization that issued the invitation either at a hotel or at a local registration office (OVIR). Registration is important because people lacking registration may have trouble leaving the country.
Russian visa processing prices vary according to the applicant's citizenship and the Russian Consulate applied to.
Six types of Russian visas exist, but most travelers apply for one of three types: Tourist Visas, Business Visas, Student Visas.
Other types of visas include Transit Visas, On-the-Spot Visas, and Diplomatic Visas. Transit visas can be a cheap option for travelers headed for China or Central Asia, but it's often hard to make it in and out of the country in your allotted window of time. On-the-Spot Visas are generally not available so it can be a relatively great risk depending on them - they are also quite expensive.

Immigration Cards

Immigration cards are part of a range of measures connected to the law on foreigners, which was introduced in November 2002 before many of its related rules and regulations were issued.
Officials have repeatedly stated that the aim of the law is to track illegal migrants from other countries of the Commonwealth of Independent States, whose citizens can travel to Russia without visas. Citizens of Belarus, which has a union agreement with Russia, are not required to obtain cards.
The card has two identical sections. The holder's name, age, sex and purpose of stay are recorded on both parts; one half stays at the point of issue, and the other is given up when the holder leaves the country. The immigration card should be carried at all times with your passport.

You can get more information here:

- Requirements for getting visa
- Tourist visa
- Business visa
- Visa registration
- Russian Embassies

If You have some questions You can ask them by mail visa@rusoperator.com