I won't be making a tutorial. The only strategy in this video is 'spam lots of wings near the center of mass so it flies straight', Both missiles are on KerbalX: kerbalx.com/Capital_Asterisk if you look around KerbalX, there's some far more advanced designs out there.
You need high impact resistant parts in the missile so that they smash through their target, otherwise they'll likely just break before the intended target