lol I'm not really a "genius" but I know how to do all of the basic stuff :]
there's a user on youtube named "bearsfan092" who has videos for learning how to RNG abuse and then abusing for legendaries and then abusing for egg's. It includes things like abusing for shinies and IV's (mostly IV's).
here is his video on the "calibration" phase which is what you'll need to know: YouTube - RNG abuse- Calibration Phase
anything else you have questions on you can also answer in a thread on Smogon (the biggest pokemon site on the web, much like KHI to KH). Here: All Generation PRNG Help / Information - Smogon Community
Abusing Egg IV's: YouTube - Pokemon RNG Abuse: Egg IVs Part 1
Abusing legends: YouTube - RNG Abuse for Legends in Diamond, Pearl, and Platinum
RNG abuse for HGSS I'm not sure on since I don't do that. lol Hopefully this will help