And what are we supposed to learn?

The reality is never quite like what one reads in the press. Two messages earlier, we learned that toilets are an underestimated problem. Here we learn that bicycles are a cheap means of transportation.
Let me try with a question: suppose you have about a million people to take care of. They come from different countries and when they come from the same country, they may not like each other at all: it is not because they flee a common enemy that they had not been at war for a few generation. Some of them may even be violent, it stands to reason that some of the ones who survived on overpopulated boats may have made it because they pushed the weaker passengers overboard. Add a fair percentage of young men who fled to Europe because someone told them that money is plentiful and women promiscuous. Add also, of course, a percentage of children who lost their parents and families who left the newly dug tombs of their siblings back home. Now the question: how do you make it so that they survive the German winter, learn the language and somewhat get a job?
It's a mess.
Jerome,
The fact that you notice there are complexities, likely as not Merkel does too! I have no doubt that it will be quite clumsy at first. However, you will learn quickly from the first mistakes and work out solutions. I have confidence that Germans are smart enough to see through issues as the ones you enumerate.
What has to be accepted really, is goodbye to essentially "Christian" Europe and taking for granted that pork and bacon are standard in school menus, as this would be most offensive to the new population. As long as the folk going to bed together understand how serious their commitment to a marriage has to be, it can work out very well.
The Syrians are going to be a mixed bunch, some with advanced education and marketable skills and a lot needing care. However, in the long run they will reinvigorate the German society with their new blood and diverse abilities and ways of looking at matters. It all depends how Germany and the newcomers succeed in integrating on an educational and cultural values level. As a basis for discussion, the moral compasses of the refugee families will be likely as noble as any in Germany or anywhere else, for that matter. What will be harder to integrate will be the new views of each other and very different rules of the place of women and expression sexuality in the next generation.
If you do not exclude the preachers on the fringes that incite and draw young folk to extremism, then it will be a massive blow to German society. It could be very painful for todays Germans to tolerate serious state intervention in religion. However, for sure the state can and should financially support only Western-educated Imams who see the country as their home]. You cannot have preachers that view Western Societies as bases of those hated "Crusaders"! To only have preachers that see German society as non-threatening, one needs locally educated Islamic Scholars, not those merely financed from the outside. Islam in Germany must become a German spiritual center with its own identity and scholarship. Yes, an oil rich state can readily pay all the salaries, but It's a too severe a Faustian bargain. If folk understand that, you can exclude the recruiters. That way, you have the best of Islamic culture and learning. You can even encourage Koran study for itself. This way, the starved needs of Muslims will be met and not for anti-Western agitation! But without putting hard cash into assuring that those that preach have some understanding of Western Society, the Rights of Man, the scholarship of Western Philosophers that support such concepts, then all you are doing is reproducing areas of Paris and Brussels which are essentially off limits to police and run by extremists.
I doubt that Germans realize this necessity. I also doubt they can imagine themselves taking over the salaries of Germany's teaching of Islam. However, that's the need and wide approach from my single perspective.
Still, my assertions and remarks take nothing away from the magnificence of the gesture Germany is making to take in 1 million displaced persons of Muslim faith.
Asher