Beginner: which black-hat tactic should I learn first?

Hi guys, total newbie to black-hat techniques and trying to decide where to focus first. Which tactic is the easiest to learn, gives fast feedback, and has a low initial cost/risk for testing (e.g, private blog networks, automated link building, tiered link stacks, expired domains, cloaking, spun content)?

Please include a short note on: expected learning curve, common pitfalls, and one safety tip to avoid getting sites nuked. Looking for something I can practice on a small test site.

Check out the stickies:
https://www.blackhatworld.com/seo/guide-tutorials-a-short-beginners-guide-to-blackhat-seo.1134018/
https://www.blackhatworld.com/seo/g...uide-to-blackhat-seo-part-2-3k-words.1424475/

Start with guest posts on niche relevant sites.

Easy to understand. Fast feedback. And you learn what makes a link good or bad, which is the foundation for every other tactic anyway.

Build 5 to 10 links to a test site and watch what happens in Search Console. That's your real education.

Everything else, PBNs, tiered stacks, parasites, makes more sense once you have seen basic link building work.

There is a grey area that is strictly considered black hat but no one cares. It's link building. Google asks you to wait for people to find and link back to your site but it never happens. Everyone builds backlinks to some extent. You can start with it and apply other tactics later.