Recently I had the privilege and good fortune to present at the 2019 Sitecore Symposium in Orlando, Florida. Below are links to the slides and notes from my presentation on customising Sitecore Marketing Automation plans.

Slides

Automate Everything! from Andy Parry

Code

Github repository containing sample code, utilities and content package: https://github.com/parrya/ma-demo

Troubleshooting and debugging tips

See this blog post for some tips on creating custom activity types in Sitecore Marketing Automation plans.

Resources

Sitecore docs:
https://doc.sitecore.com/developers/92/sitecore-experience-platform/en/activity-types.html
Custom Activity Types in 9.0.x:
https://www.brimit.com/blog/sitecore-9-custom-marketing-automation-action
Automation deep dive:
https://www.linkedin.com/pulse/how-sitecore-9-marketing-automation-works-deep-dive-emmerzaal/
Marketing Automation Achitecture:
https://www.youtube.com/watch?v=0HxUph2YLZc&list=PL1jJVFm_lGnyicywCcwcWa8RtsoiJEbC9&index=5