You’ve asked for them and SHW’s guest speakers have delivered.
Matt DiVisconte, manager at Lodi Wine Labs, has shared his July 19, 2017 PowerPoint presentation on wine Additives and Their Effects.
This file along with Scott Harvey’s Toolbox for Wine Adjustments and Bob Peak’s Fermentation Frenzy can be found on the SHW’s website’s home page. Choose the Member Resources tab, then Mentors and Speaker Resources.
The presentations are at the bottom of the page after Club mentors. By the way, if you are making specific styles of wine (such as port), or would like guidance on planting a home vineyard, find a mentor to advise you.