Hi.

If you want to create new blockchain project, you should better to investigate the exist codebase.
There's no precise tutorials of how to create powerful blockchain. But you can find some simple realization of it, e.g. https://medium.com/@lhartikk/a-blockchain-in-200-lines-of-code-963cc1cc0e54

Also you can read some books about the technology. Such as Mastering Bitcoin.