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There are some links and info in this article which are good starting points: "8 Things We Learned about Blockchain During our Hackathon" https://arctouch.com/2018/01/blockchain-hackathon/

I’ll take a look. Thanks! I am looking for something step by step and really easy to understand.

There are a couple of courses on Udemy which are step by step. Search for 'solidity'. There's a course by Stephen Grider (spelling?).