Here's some basic information about travelling in Russia and Eastern Europe. While all of this may sound like basic advice, a surprising amount of men seeking Russian brides haven't travelled overseas before, much less travelled to Russia or Eastern Europe.
To travel to Russia or Eastern Europe you will almost certainly require a passport. Passports can be time consuming to apply for, so make sure you get yours well before you plan to travel.
Even if you do already possess a passport, make sure it's valid for at least 6 months - many countries insist that your passport has an expiry date well into the future.
For busy travellers, also make sure you passport has some blank pages on it - some countries need there to be a whole page for a visa to be glued into the passport.
Some countries require that you apply for a visa before you travel to them. It's therefore essential that you check the country's entry requirements before you travel. Visa requirements change constantly, and they depend on your nationality. When researching visa requirements, check a couple of websites, including the country's official immigration site or embassy website.
Visas can take a few days to arrange (especially at peak periods), so make sure you apply for one well before your intended travel date. You can usually find travel agencies in your local country that will handle your visa application for you (for a fee of course).
Russia and Eastern Europe aren't always the safest places to visit, particularly for lone travellers. When travelling in Eastern Europe it's best to take sensible precautions, such as being more careful after dark, and avoiding making trouble with the locals. Dress conservatively and try to blend in. Terrorism is a rare possibility, so don't linger around major transport interchanges