In UK, Ebay have switched from using Paypal compulsorily to collecting the money & paying it into your bank account. There's no saving as Ebay have increased their fees to what was previously Ebay + Paypal. The new system wotks - I sold an item & funds were deposited in my bank account 3 or 4 days later. I certainly didn't need to give them any further info.
I bought Darrell Young's book for my D7100 & found it invaluable. Amazon Uk don't have his D7500 book in stock but it might be worth trying: https://www.amazon.co.uk/Mastering-Nikon-D7500-Darrell-Young/dp/1681983257