If you register and link your steam account in the Resident Evil website, you get access to some unlocks of the game like, buy a costume for Leon or Helena at 60,000 points.https://www.residentevil.net/
1) Register a Capcom Account: https://account.capcom.com/register/send_register_mail.html
2) Log-In: https://www.residentevil.net
3) Link your Capcom Account to Steam Account. (is a simple Log-In)
4) Now you can see an Overview of your Profile, your in-game stats, points, etc.
5) Check the Overview Panel in the Left side corner and click "Unlockable Items", there you can spent your in-game points to buy Costumes for Leon, Helena, Chris, all of them.
6) You may wanna check the EX Item List, those are unlockables costumes only by events in the future. If you Pre-Order the game, you gonna get the season pass DLC and im sure they gonna add events for the EX Costumes.
7) Check your stats, unlock wallpapers, costumes, goodies and more :D !!
The idea is simple, play the game, win points and use them to unlock new things of the game, like action figures and more, there is a huge list of item to unlock, same as RE5, so play the game, have some fun collecting points and buying stuff.
Enjoy ! :D