Dude, there are no tips. Just luck. My boy was a level 25 hunter last monday, after IB level 29, by Thur level 30, and last night did his first poe after doing queens mission and got his first Gally from poe28. He has a total, adding all 3 characters together, 19.5 hours of gameplay. All random, dude. My first gally was in the Nov/dec time frame after release. I was lv28 hunter doing VoG for the very first time. My second was nightfall. Its all random.