What to do in a bad weather? Of course, the best choice is studying! I felt pretty confident about my knowledge, so I decided to take a written test. The exam itself is not so hard. The program interface looks exactly like gleim’s software, the pictures are the same as the ones available in all popular question banks (for example, gleim, jeppesen, sportys, aviationexam).
The questions are not exactly the same as in preparation books, but nothing special. Take your time, read the question very carefully, don’t hurry up, and you’re done. The point is knowledge.
One more advice for those who prepares for the FAA IR tests: apart from reading the books (which is essential), use question banks to get the idea about your knowledge. I heard a lot about Sheppard, but less expensive alternatives work too. For example, I used gleim and aviationexam (both are good, the latter also offer monthly subscriptions – very convenient if you want only refresh your knowledge) and got 87%. Not an astonishing result, but not bad too.