Reddit reviews Aliens Omnibus, Vol. 1

The first place I would start is at the beginning. Most if not all can be purchased on Comixology for less than the physical copies, if you have a tablet.

This is the first three Aliens comic series that were done by Dark Horse Comics:

Aliens Omnibus Vol 1

• These are probably some of the best aliens books written.
  
  The Aliens vs Predator books are the next best.
  
  Aliens vs. Predator Omnibus, Vol. 1
  
• This is the original Aliens vs Predator series. It includes the three stories that were published in Dark Horse Presents and is 100% better than either of the movies that were made.
  
  The Predator comics are probably the weakest of the comics in my opinion. The first few series are in this book:
  
  Predator Omnibus Volume 1
  
  Unlike Marvel or DC, these Omnibuses are published in release order, so the next series are found in volume 2 of the title comics.
  
  If you want the first Aliens series in a collectible format, the 30th Anniversary hard cover is good. It is a reprint of the original series in the original format. Some names were changed in the comics after Alien^3 was released. Those changes are not present in the hardcover and its in the original black and white.
  Aliens 30th Anniversary: The Original Comics Series
  
  From what I can tell on Amazon. Anything listed as "The Complete Omnibus" are actually novelizations of the comic books. If you are looking for the comics, I would avoid those titles.

Collection one is the earth hive trilogy (earth hive, nightmare asylum, & female war). I've got the first two omnibus collections off amazon (I think there are eight in total) and they are pretty nice quality. This is a pretty awesome value.

http://www.amazon.com/Aliens-Omnibus-Vol-Mark-Verheiden/dp/1593077270

I can give you a hand with the post-Aliens, pre-Alien3 comics.

There's three arcs by Mark Verheiden, named Outbreak (Dark Horse, 1988), Nightmare Asylum (Dark Horse, 1989) and Female War/Earth War (Dark Horse, 1990) (the name for that one changes in different editions). They follow the adventures of Newt and Hicks (joined by Ripley at the end of Nightmare Asylum) roughly a decade after the ending of Aliens.

Obviously if you've seen Alien3 you know why the names had to be changed, and the art was also colorized (it had originally been in black and white). There was some backlash from long-time fans over the renaming so eventually Dark Horse relented and rereleased the comics in their original format, B&W art restored and names unchanged; seeing as these are now the official versions of the stories, you can probably consider them out-of-continuity, but they're still well worth reading.

If you want to read them in their original format, Outbreak is collected here and [the other two here](
https://www.amazon.com/gp/aw/d/1506703569/ref=pd_aw_fbt_14_img_2?ie=UTF8&psc=1&refRID=X6ECBET4BH1WEARCE2ZK).

If you want the colorized, edited versions, they're collected together in the first volume of the Dark Horse Aliens Omnibus series, [currently available for pretty cheap on Amazon Marketplace](
https://www.amazon.com/gp/aw/d/1593077270/ref=mp_s_a_1_1?ie=UTF8&qid=1517986893&sr=8-1&pi=AC_SX236_SY340_FMwebp_QL65&keywords=dark+horse+aliens+omnibus#productDescription_secondary_view_div_1517986925594). The rest of those Omnibi will collect the various Dark Horse Aliens comics up until that point, organised by the year they were published, though the series is ten years old so there'll be more besides.

Do yourself a favor and buy the Aliens omnibus series it is what you are looking for!

Comics: Aliens Omnibus Volume 1

Books: Aliens: Earth Hive

The book is the 'same' story as the first part of the Omnibus. Start with whichever medium you prefer. Shop around for better prices. Both are also available as EBooks.

I haven't read it yet but I've heard this is great if you want to get into the comics

Start with Omnibus Vol 1. It begins with Outbreak and Nightmare Asylum which are essential reading. The comics in the other volumes are of very mixed quality, from brilliant to utter shit.

I would also recommend reading the novelizations of the movies. I'm about to finish the first one and it was very well written.