I'm completely confused. I haven't played 40k since early 8th Ed, have several Hellforged units - Scorpius, Cerberus, Fellblade, Falchion, 3 Rapiers - and have no idea where to find rules/points for them. Anyone point me in the right direction please?

I had a look on the GW and FW sites but when it comes to how to play the game they're rather opaque.

(Honestly, I found 2nd Ed much less complicated than the fractured, scattered approach to rules in 8th/9th.)