Can you say me how i can get into the ico?
I created an account at ico.wavesplattform
There is a adress: adress to pay
So, should i only send some btc to this adress and iam in the ico?

yes, that simple !
Can i send first small ammounts?
Or must i send one amount to each account?
Because i dont trust this thing, that it is so easy.
yes, you can send as many times and as much as you like to the same BTC address on your ICO account
Ok, thanks to all for the help.
Iam sending now my first small ammount.
btw. the btc adress that is showing the total amount is only the escrow adress or not?
So it could be now 80.000 btc or not? Or is there a btc adress with all ico btcs at once?