The updated Aerial Spinning Reference Guide V2 has progressions and drills on straps, hoop, rope, and sling. Its over 50+ pages contain a multitude of videos, pictures, and in-depth explanations to start spinning and spin your way to puking. Okay, no it doesn't (because that sounds icky). It also doesn't include spinning on static trapeze or chains.
With an aerial anatomy appendix, PT-recommended exercises, and recommendations for making gains and overcoming plateaus, this guide progresses from spin starts to flares and flare variants, flare to flag (on bar and vertical apparatus like rope and silks) to fulltwists and reverse spinning skills.