first create a new LTC wallet and move all your litecoins to that new wallet. wait for them to confirm and have enough confirmation (3 is the recommendation for bitcoin, don't know how many is recommended for LTC).
second choose and download LCC wallet. either one of these official ones:
https://litecoinca.sh/#downloador coinomi
https://coinomi.com/ which is for mobile
[preferably install official ones on a separate computer, or a virtual machine/sandbox, because you don't know what these releases contain. they may contain malware to infect your main computer]
[coinomi is different, it has been around for a while and it is for mobile and for bitcoin but supports these stuff!]
finally import your private keys into the new LCC wallets and claim your "free money"!
links:
ANN:
https://bitcointalk.org/index.php?topic=2876538.0Github:
https://github.com/litecoincash-project/litecoincash