Amazon AWS S3 - creating permissions for objects in a bucket

EDIT: I just realized I made this in a slightly incorrect part of forum. I'd appreciate if someone can move it if necessary.

Setting up my first landing pages with Amazon hosting, having a domain from Namecheap I ran into a little issue of understanding, as I'm actually terrible with all the server/network/website building stuff ( in plans to educate about it )

These are my settings

I've used this string:



Except for changing the EXAMPLE into my actual domain - is there something else I should know about this?
I'm not sure actually what this string does and if I should be pasting some other one here.

I'd appreciate a word of advice.

All the above I'm building to try out Sweepstakes strategies (PureLander+Maxbounty/Mobidea+PropellerAds)

Add Amazon CDN - will give you better load time.
For tutorials - check YouTube -> "amazon s3 cdn tutorial" -> there are a lot of tutorials that helped me to figure this out