I admit it: I'm not going to finish this one. Self-study is difficult when learning languages, and for me it has to fit decently into my commuting or other spare time. I have not found it possible to sit down and do the written exercises from this book, and there is no audio component which means I lose the pull effect of the MP3 player summoning you to play the next section.
I think it is not a bad course. It alerted me to a number of tricky exceptions to the general rules which
my previous textbook had rather glossed over (eg the irregular prepositional в Крыму, "in the Crimea"). But I would have neede regular human lessons as well to get me through to the end, so I'm leaving it here, and switching to a quite different Indo-European language. I will come back to Russian again, and am glad I've made a start, but that's it for now.