slb thanks. I am willing to create a help (and youtube video tutorial) but first I have to figure out for myself

So please, tell me:
1. Is mandatory to have 2 seeding nodes? If YES, the config file should contain both seeding nodes IPs?
2. Genesis coinbase transaction hex. When creating config file using the form from your website, I see that a genesis hex is generated. If I later run ./forknoted --config-file configs/imaginary_blockchain.conf --print-genesis-tx, a new genesis hex will be generated. Should I replace it in the config file? Or can I leave the genesis hex genereted before (by your website form) ?
I wrote a small tutorial file with I belive is nedeed to create own coin. The tutorial is here
https://pastebin.com/TRsDzy2uI am not sure if it is correct. Thanks!