I've read there will be a whitelist. How can I get whitelisted?
The whitelist will start in several days, you'll be able to apply for it.
what is it? will I be able to buy tokens if I will not registered in a white list?
Whitelisting grants you an ability to participate in the private stage of TGE2, to be the one of the first to acquire tokens. On the public stage, purchasing of tokens will be opened for everyone.