I've got quite some experience with many routers, but I'm newbie to MicroTik routers. At present I experience increadible trouble to get stable communication to it. When I achieve that, my regular internet connection over my other router is no longer accessible with the same computer. So I cannot use the manual link from the router or any other on-line assistance. I don't want to remove my present router yet since the MicroTik gives to many trouble before I even get started.

What I do miss for this router (RB2011) is a download-able manual in PDF where everything is explained. That would allow me to set up the router before I put in place of existing one. It even looks unlogical to me to sell a router without off-line accessible manual, since the first thing you need when the router config is messed up is an off-line PDF.

The first unclear item to this router is even the reset button to return to factory settings: how to use? Press before power on (is there a need to hold for certain time?), press after booting? How long?

http://wiki.mikrotik.com/wiki/Main_Page
http://routerboard.com/pdf/423/rb2011U-qg.pdf

1. The link to http://routerboard.com/pdf/423/rb2011U-qg.pdf does not exist.
2. I would like to have a PDF regarding the router OS, not the hardware.

You have waited a little too long after your question has been answered to check the link.
Links sometimes change and 4 years later they may no longer be valid.

To reply to your question: no, there exists no PDF manual of RouterOS. There are small leaflets available as PDF
files that explain how to get started, but for further configuration and special procedures like resetting you need
to use the WiKi manual.

MikroTik routers are not really targeted to users for whom it is their first connection and first experience with internet.
With the getting started leaflet you can get online, but when you need access to an offline manual comprising all
the configuration options etc, I'm afraid RouterOS is not really for you.

There are a few books about RouterOS, they are offline:
https://www.amazon.com/s/ref=nb_sb_ss_c ... UKD4I84OHE

books are 'offline' - I like that idea