Best thing is to go right to these two websites as they've made the announcement of the fork date and approximate snapshot, I''ll have to look again but it was scheduled for 28 Feb, 2018 and they are diligently testing the blockchain fork before they release it. The deliberately delayed to give extra time to really test out the fork.

Also you'll need to have your any Bitcoin and Zclassic in a 'fork' supported wallet. Again, I've looked into it a lot but wasn't able to put in all the reference due to my member level at the time. All the info. is prob. on both websites now.

https://btcprivate.org/

http://zclassic.org/

Darn, I missed buying some Zclassic when it was about $68 US last week at one point.