the first one you would have to add a conjunction to. That makes it correct.
For Example:
Arturo loves to hike and he's familiar with all the local trails.
The internet also helps us stay in touch with our friends and family and helps sever those distances of being apart. Comparably, professionals in personal business can use it to keep in touch with their clients. You can also share just about anything on the internet, and people with common interests and ideas can bring you closer than never before.
The folly of men has enhanced the value of gold and silver because of their scarcity
Well it is being told by the protagonist inside the actual book itself so it wood basically be called a story within a story hope i helped