Hi Michael, The process is, in fact, quite simple: In your case, I would most STRONGLY advise you to get a tourist visa. That will permit you to stay inside Russia for a maximum of 30 days. There are several options to obtain an invitation which you need to produce when you apply for your visa (at the Embassy, a Consulate General or at an OFFICIAL visa agency, i.e. accredited partners. I most strongly advise AGAINST any other form of private arrangement or agency. The temptation to trick someone is vast for them and the chance for you to obtain compensation pitifully low. Once you enter the country, you need to register with the official partner (agency or person, if you choose airbnb for example). Once you register, you're free to travel, but you must stay the first 72 hours in the place of registration. If you begin your tour in Moscow or St. Pete, this ought to be simple, as both places offer way more than 3 days of cultural enrichment and delightful experience.