Shotgun slug loading questions

Just entered the world of shotshell reloading after three decades of metallic reloading. So what took me so long, he?

Am wanting to dabble a bit with slug reloading, but have a few questions.

1. How do you roll crimp a slug? I know--or I read--, let me rephrase that, the Lee slugs can be crimped with a normal six/eight-point crimp. . . but how do you roll crimp a shotgun shell?

2. Sabot slugs? I'm assuming you can buy the sleeves. What about wads, etc?

3. Any manuals/references out there specifically for slug reloading?

Muchas Thankias.

:coffee: