What order should I read them in?

Ride: Isle of the Horse Shifters

Felicity & Niall's Story
(Serialized Paranormal Shifter Romance)

Ride: Awakening - Book 1
Ride: The Bet - Book 2
Ride: Out Cold - Book 3
Ride: The Veil - Book 4

Earth Girls Aren't Easy Series

Nin - Book 1

Ferrix - Book 2

Stand Alone Contemporary Romance