Reddit reviews The New Essential Guide to Alien Species (Star Wars)

There's a Star Wars guide out about all the all the races. It has a full break down on their looks, size, and characteristics. Hope this helps.

http://www.amazon.com/Essential-Guide-Alien-Species-Star/dp/034547760X/ref=sr_1_11?s=books&ie=UTF8&qid=1393885792&sr=1-11&keywords=star+wars+essential+guide

My suggestion, which could help you a bunch would be to track down a PDF/ebook of the "The New Essential Guide to Alien Species".

It has most of the species in there, each with a gorgeous picture, many of which have become the gold standard on how some species are portrayed (every time you se a picture with NEGAS in the filename it's from that book! The wiki uses them ALL THE TIME!), a nice description and a lot more info.

Here's also a nice project someone on this sub is making:
Race Cards, which are printable cards with a little race info on them (he uses NEGAS images mostly as well!).
You could just as well copy the images and display those on your screen! :)

Even a 40k version of this would be great!

Try playing Knights of the old Republic 1 and 2, it tells you a lot about the Second Sith War and the Mandalorian Wars. Also I would highly recommend all the new Essential guides, found in any Chapters store or Amazon

http://www.amazon.com/Jedi-vs-Sith-Essential-Guide/dp/0345493346

http://www.amazon.com/Star-Wars-The-Essential-Atlas/dp/0345477642/ref=pd_sim_b_1/184-0640685-6358056

http://www.amazon.com/Essential-Guide-Warfare-Star-Wars/dp/0345477626/ref=pd_sim_b_1

http://www.amazon.com/Essential-Guide-Vehicles-Vessels-Star/dp/0345449029/ref=pd_sim_b_4

http://www.amazon.com/Essential-Weapons-Technology-Revised-Edition/dp/0345449037/ref=pd_sim_b_1

http://www.amazon.com/Essential-Guide-Alien-Species-Star/dp/034547760X/ref=pd_sim_b_3

http://www.amazon.com/Essential-Guide-Droids-Star-Wars/dp/0345477596/ref=pd_sim_b_1

http://www.amazon.com/The-Essential-Chronology-Star-Wars/dp/0345449010/ref=pd_sim_b_4

http://www.amazon.com/Essential-Guide-Characters-Star-Wars/dp/0345449002/ref=pd_sim_b_4

This one is good for books.

http://www.amazon.com/Essential-Readers-Companion-Star-Wars/dp/0345511190/ref=pd_sim_b_1