The Abduction Cycles Books 1-3 by John Elijah Cressman

Village of Hawkshead
Imagine waking up in a world where magic is real!

One minute Ethan Gower was an average computer technician, playing online games with his friends. Now he’s been abducted and dropped into a strange world with others who have been taken from their homes. And magic and monsters are real.

Now, Ethan is a wizard and must convince his new companions to band together in order to survive in this strange new world as they level up, gain abilities and try to unravel the mystery of why they were abducted and how to find a way home.

But things are never easy and soon he and his friends find themselves in the middle of a conflict that could spell disaster to their new home.

Oh, and there might be something murdering wizards and sucking out their brains.

Could things get any worse?

Library of Daemonium
Still having questions about the new world he's been dropped into, Ethan has more pressing concerns figuring out who or what is killing the wizards.
Unfortunately, the only source of those answers seems to be the members only library of the Order of the Scroll. Of course, he can join and read all the books he wants - but there's a catch.
The custodians of the library first want him to retrieve some lost tomes from an abandoned library in a ruined city. Seems simple, right? Not a chance. Did they forget to mention that no one who's entered the library has ever returned?
To make matters worse, Ethan almost kills himself learning a new type of magic, but it might just be the key to making it out of this crazy adventure alive.
Join Ethan and friends in the second exciting installment of the Abduction Cycles!

Tomb of Pendragon
Ethan and his companions have returned to Hawkshead, but all is not well. Something is scaring away the animals in the area and wreaking havoc on the village’s food supply.
The villagers call on Ethan and his friends to find the problem and deal with it. All clues lead the group to the old abandoned mine and the tomb which the former mayor uncovered. What sort of magic or monster could scare away the animals, and what traps may still lurk in the tomb's darkness?
When the tomb seals behind them, Ethan and the group have no choice but go forward into the depths and face whatever dangers lie at the heart of the tomb. But the tomb may no longer be empty, and its new residents don't appreciate trespassers.
Now they must use all of their abilities and magic to make it out alive, and Ethan may have to make the ultimate sacrifice to save his friends.