I just started playing pokemon this year and I discovered you can get the PERFECT pokemon by breeding. I watched some videos on Youtube about it but they just confuse me more and more. If the parent pokemon has best iv on Speed, will that iv go to Speed as well for the offspring or different stat? And also, which parent will give that iv to the offspring? The father or the mother Or both? If you guys dont get anything im saying, I'm sorry I cant explain that well. So please tell me everything about Iv breeding if you didnt understand me. Thank you! :)
In addition to the explanations already given, you can use the power items (The ones used for EV training) to guarantee a specific stat is passed down (Having a parent hold the one that increases speed EVs will guarantee that the speed IV of the parent holding it will be passed down). This is mostly obsolete due to the Destiny Knot (Especially if you have a parent with 6 IVs), but is good to note.
And, in case it wasn't already clear from the previous explanations (IVs took me a while to learn too lol), here's an example from how I've bred stuff:
Start with a parent of the pokemon you want to breed (Magikarp for this example):
Your starting Magikarp has IVs of xx/xx/xx/xx/xx/xx (xx is usually used to signify a non-31 IV). You have a parent with 6 31 IVs (Ditto for this example). Throw a Destiny Knot on a pokemon, and if a parent has the nature you want, put an everstone on that parent. The offspring could A: inherit all stats from Magikarp, B: inherit all stats from Ditto, or C: inherit a mix from both (The most likely). The stats inherited are random; it just picks a mix of 5 stats from the parents.
You hatch 5 Magikarp. You check the IVs and find that the best Magikarp has 31/31/xx/xx/31/xx. In this example, you probably don't care about the special attack stat, so your eventual goal will be a 31/31/xx/31/31/31 Magikarp.
You then use the best Magikarp in place of the xx/xx/xx/xx/xx/xx Magikarp from earlier. You hatch 5 more, and find the best one is 31/31/31/31/xx/31. You use this as the new parent, and from there you eventually get the 31/31/xx/31/31/31 Magikarp. Hope this helped somehow, it's a bit rambly lol, sorry.