You seem to jump between ideas a lot, you have to get at least somewhere with something before following the next idea.
HN isn't the best place to ask for this kind of advice, better find a community specialized in the environment you want to use and look there + ask specific questions on Stack Overflow.
That said, you should try to find and use basic resources on your own, people are way more willing to help you with specific problems than with "I have this idea, what do I have to do?", like this or your post yesterday asking for step-by-step to build a specific python website. You likely won't get a good answer to tht, unless someone magically knows a tutorial that uses exactly that example.
Follow a few tutorials or simple examples, then try adapt them for what you want to do (e.g. for the python-image-site thing, there are tons of Python website tutorials e.g. for blogs and such. Follow one of those, then modify it or try to build an image site among similar lines), ask specific questions if you get stuck. (e.g. for python, reddit has /r/learnpython).