I understand.I want to create website and make server for my country(Ukraine).But i have to know how much disk space i need to buy now for future full node.And,may be somebody know,where can i take Ukrainian IoP logo,or who can make it,because it's not in the list https://github.com/Fermat-ORG/media-kit/tree/master/MediaKit/Region-Logos
All logos will be ready soon, including Ukraine. If it is not there already it will be in a few days.
Regarding disk space, don't worry for that now. Start with your chapter, get involved and all the other answers will come along the way.