I want to start with Arduino stuff.
Some tips which board i should buy?
Or some tips for a Hello World or something like this?

There's no hello world

There's blink(13) 😉

Get some chinese package from ebay, they usually give a good start of components and an arduino for like 20$.

Uno seems good for beginners. I have one myself

@speedForce ok haha

@JoshBent ok thanks and they are original arduinos or chinese fake?

Since the design is open source, fake Uno boards are actually pretty good.
They may not be as reliable, but I got four of them for the price of one legit Uno.
Start with a fake.
(In fact, you can even assemble your own Arduino "Uno" using a ATmega 328p, breadboard, xtal osc, a few caps and a bunch of jumpers and resistors)

@nobes it really does not matter if fake or not, fakes are as supported by the arduino IDE as original ones for a long time now.

@JoshBent can you send me an example link i just see overpriced Boards...

@nobes I would suggest buying a range of capacitors and resistors, both cost roughly 10$ for a pack too.

https://m.ebay.com/itm/...

https://m.ebay.com/sch/i.html/...

Basically compare what set gives you most that interests you and go with it, the first one linked seems on quick look to be pretty good. 😊

@JoshBent ok thanks

#define 182 13

Does that even work? 😛