Long time ago, when I was 14-15, I wanted my parents to buy me a mountain bike. That time I didn't know that real mountain bikes were 10-20 times more expensive than the regular ones, although they look almost the same.
There were no limits of my happiness and gratitude when I got my own bike on my birthday! But the bike's gear shift mechanism broke down on the next day. It didn't take much time to repair that mechanism, but I was not that excited anymore.
And guess what, I started to learn the st












