It could delete your photos. Paid for apps, books, etc should be ok.
You should have had the photos on your original PC. Do you have them on the new PC? If so get iTunes to point to them for sync and you should be ok.
HTC U12 Plus review: Hands-on
Brilliant (and Weird) World Cup 2018 Art and Design Projects
Best Android emulators for Mac
TV & Streaming : comment regarder Roland Garros ?