[gentoo-user] Anyone can afford information about build kernel?

[Lavender]

It seems that no matter I build gentoo manually or with genkernel I can't have 
a fine-working kernel finally. Obviously I must solve it by myself , so I 
determined to build entire kernel all manually , it requests a lot of linux 
knowlege . All for that, I hope someone could tell me where to get this 
information , I haven't found them on gentoo.org , so please lead me to the 
correct direction, thank you for you all !