You're asking way too broad questions. Short answers are: google it; yes; everything you want (within the law
).
Please do your homework: either search this forum or internet in general, there are blogs and videos available describing people's path from 0 / PPL / whatever to ATPL with a LOT of info on each and every aspect of the process. Then if you still would have any specific questions, I'm sure people here would be able to help you. Good luck
