Hello, I am from Czech republic and there aren't any ninjutsu schools.. Soo Can you, guys, tell me with what can I start? I'm training Sanahin no kata.
Start with whatever art is available to you. Find all the martial arts classes in your area, then try all of them and see which one you like the most and also gits in with your schedule. Good luck, and welcome to MAP!
Instruktor – Bujinkan Dojo Prague Yes there is, maybe email these people and ask which dojo is closest to you!
What part of the Czech Republic are you in? I also found this Bujinkan dojo and in fact, even heard of their Prague dojo. They seem to have spread to several cities. Maybe one of them is within reach?
If you can't find a legitimate Shidoshi that regularly trains in Japan, or a Shidoshi-Ho with goals to train in Japan, then I wouldn't suggest taking up the art. You need a Sensei who can guide you on the journey, I'd look for a really good school around you that you can study with even if it's not Bujinkan. If you are really committed to learning Bujinkan, then find the closest Shidoshi to you (use the internet to do some searching for who the closest is) and travel to him/her regularly. At some point, you might get permission to form your own study group under that Shidoshi's guidance. This route will take a lot of dedication, time, and resources on your part, but it's the only way if you really want to learn the art.
I think the OP wants to be able to say they are training ninjutsu without having to deal with any of that inconvenient and time consuming learning from an actual instructor stuff. I could be wrong though, it has been known to happen on occasion.