You might try Quora or Reddit. None of the Stack Exchange sites are suited for your first question, and your second is too broad as far as the recommendations go to post anywhere here either. SO is for specific questions related to programming (code) or use of programmers tools (IDEs, compilers, etc.). Note that use of is not the same as recommendations for. — Ken White 15 secs ago

Note that such questions about design principles and best practices are more clearly on-topic on softwareengineering. You could start by reading a few of the discussions there: softwareengineering.stackexchange.com/search?q=Law+of+Demete‌​r — Hulk 53 secs ago

may be here programmersought.com/article/25581101625 — Deadpool 46 secs ago

This sounds like a question that would fit better over at: softwareengineering.stackexchange.com The difference being that SO is for code and SE is for design questions. — HackSlash 9 secs ago