I am a developer and I recently came accross a website to practice my development environment skills. This website has a premium access policy and rather than paying, I would like to develop my own project to reproduce some of their ideas, to practise on my own.
I think that I can legally do that at home without risking any kind of legal attacks.
However, I would also like to share my code on GitHub, to make it available for other people, and have a bit more visibility for future potential employers.
Since I won't be using any of the code of the proprietary website, Is opensourcing my code illegal ? I won't copying the website exactly but take some of its ideas.
Thanks in advance for your help.