another DAG Coin, awesome! is there a Exchange to buy some coins for a test? I would like to compare with the brilliant Byteball project. Is IOTA a german project? If so ... umso besser 
Nein. Das ist kein deutsches Projekt
but also many Germans are there.and it's not a another DAG Coin
it' the FIRST and sole DAG platform Others by the way are not pure DAG but hybrid between blockchain and DAG. If by others DAG algorithm does not work, then is the blockchain used.
IOTA is the only DAG platform with transactions without charge. IOTA is perfectly designed for the M2M industry, internet of everything, but not only for this! Probably at the beginning of March there is more information about it;)
Regarding Exchange: soon will be IOTA on many solid exchanges, until then you can buy iotas in slack:
https://slack.iotatoken.com/
-> #trading
The information and regulations can be found here:
https://bitcointalk.org/index.php?topic=1216479.msg17578285#msg17578285