Building PBN but Confused? Please help

I bought 20 expired domain names (free for registration). the stat as follows for each of 20 domain names

Trust Flow 15+ Domains
Referring Domains 10+
Number of Do-Follow Backlinks 10+

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How can I build an easy PBN, should I register these all 20 domains on different servers (different IP) and then redirect them to my money site??

OR should I write an article on each website related to my niche and give ******** link pointing to my main money site?

Unless they are very related to your niche I would go for option #2.

You may have a read here http://www.blackhatworld.com/seo/kens-pbn-domainsbuy-tf-17-pbn-domains-at-just-24-inc-regbuild-your-own-pbn-and-rank-now.739862/

First of all, you should read the footprints that to be avoided while building PBN. Then make a decision to build it on which registrar and which hosting. And also how to do.
Check this out: http://www.blackhatworld.com/seo/pbn-footprint-checklist.706296/#post-7241661
Hope it helps.
Best wishes mate.

Make sure the domains aren't all registered under the same name or user. Then find a variety of different hosting companies to host on. Then apply your second thought. Relative content is king here senior!!! Good luck!

You can't "easily" build a PBN.

If it's easy to build, then it's easy for Google to detect, and you'll get shut down.

Remember, Google has about 100 PhD level engineers working on ways to detect any blackhat strategy you can think of.

There's nothing easy about outsmarting them.