It is different from region to region with withdrawing and depositing so I can't say off hand. I have created my account a few years aback when I did I got $88 in bonus money free, some tickets and special freerolls. It is quite possible it is different now.
It is a really good poker room especially for beginners I would definitely recommend it. On the hierarchy of poker rooms I would put 888 fighting with ACR for third best behind Party Poker and Pokerstars.
At Cardschat we are fortunate enough to have a Representative from 888 that can answer questions queries and help us members out with anything 888 related.
Either post your questions in this thread
https://www.cardschat.com/forum/poker-rooms-10/888-poker-official-support-thread-252119/
Or if you want to keep it private, message this person directly
https://www.cardschat.com/members/888rep/
They would be able to better assist you and be a lot more knowledgeable about 888 products, bonuses and procedures than anyone else.
Best of luck and see you at the tables.