I think the best way to learn about the Psalm 83 war is to buy the book or video called "Isralestine" by Bill Salus. He has put years into the study of Psalm 83 and I believe has done an amazing job with his research. You can Visit his website Prophecydepot.com and check out his info there also. I have read his book 4 times and can't find any real argument against his research. It was written a few years ago (2 years?) but every time I read it, it feels more and more like he wrote it yesterday. The video does a good job also.
I believe Isaiah 17:1 and the Psalm 83 war is the next big event to take place. I believe it can happen as soon as this Fall!!
As for the Rapture timing.... I also believe we are outa here before that war. If not, it should be before the Ezekiel 38-39 war which should occur shortly after the Psalm war.
But Please read that book if you can. I will help clear up many questions you might have and more!