What is the best software to learn Russian?

well, if you want to speak coversational language, you should a native speaker, there isn't any program that can help wit it.

it depends on your level!

if you're a beginner, I recommend to strat with a simple reading and slow-speech listening, here you can find more information: http://www.learnrussianlanguage.ru/russian-language-reading-lessons-for-beginners

If you have a basics knowledge you can try audio lessons, like RussianEasy System - where you will interact a lot, answering a questions related to topic of the lessons

Good luck!

Oleg

I talk to my neighbours, but I don't have enough vocabulary.

I'll try it, thanks.