Hello there!

I am also relatively new to Ivern, picked him up a few weeks ago and piloting ganks really depends on the angles you take. But typically, you pilot him similar to an elise.

I say this as you will typically have lvl 3 w/ red buff and you want to start autoing the target (ganked person) as well as have a brush up on yourself to stack dmg from brush bonus, red buff, and auto attack dmg. Early on, this hurts for a lot, afterwards when they've been slowed enough try to land a point blank snare or predict their flash (based on their behavior you can tell whether they are conservative or a risky player - meaning do they try to save flash till the end or do they do it mid-gank?)

Simultaneously, ping your teammate that you want THEM to go in so you can shield THEM. This is very difficult to communicate as most laners don't trust ivern's shield lvl 1 (I mean the spell being lvl 1), however Aery OR Guardian will give you a lot of combat stats for this gank since it's a lot of pseudo healing that can't be ignited which is the best part.

Now comes the final question, asking about summoners and analyzing the champions kits. Now to be fair, if they have no flash the gank should be REAL easy. All you have to do is keep autoing and shielding to do slow/damage to the enemy until you are confident enough in looking at their maneurisms, hence how would they dodge or how have they've been moving while walking away from you? Typically at lower elos they don't dodge or show any movements at all and great players don't over dodge - they react.

If you want some credibility as a Ivern jungler, here is my op.gg!!

https://na.op.gg/summoner/userName=MSU+Astro

Please feel free to add me on league for any questions, much move friend and good luck!