While I still have my doubts about this I figure if it is going to be here I might as well give some advice.
Firstly, I'm not sure if you're replaying the game as you go but if you aren't you should. Using Sparsyle's guide is fine but there isn't much point to this existing if you aren't checking for things that are new and so on. If you're making a guide you need it to have pretty much everything.
On the topic of Sparsyle's guide, you seem to just be paraphrasing it which isn't really a great idea. You aren't going to express your ideas coherently unless you write it yourself which means you'll need to stop relying on that guide (you've also seemed to use a bit from Chubb's with similar paraphrasing. The same logic applies in that case. I'll get into why that is an even bigger problem later).
In terms of the actual format, take Simon's suggestion to get posts (including this one) deleted. We don't need 100 threads for this guide. Putting it all in one is the only way anyone is ever going to use this.
Now on to some inaccuracies. Firstly, the books do not corrupt your save data. While they cause issues and get you stuck corruption of save data is a completely separate thing. This is where my point about paraphrasing comes in. Using slightly inaccurate synonyms can cause the meaning of a sentence to be lost. Secondly, there are currently no guarantees as to what the egg is. When we return to the city in E16 it may be a Magikarp. It was a Ducklett before the egg got moved but this doesn't mean it is still one.
Lastly, a bit of proofreading wouldn't hurt. Some of your sentences don't really make sense.
Overall, I do have my doubts about this guide and think it needs some work but if you are going to do it you should make sure you do it well and make it a guide worth using. So I guess all I can say is good luck and make sure it is accurate.