I run a news website, with daily articles and occasional reviews. The site is already responsive. I would like to develop a multiplatform app for it but I don't want something simple like those app generators.
Firstly, all I want is my latest articles to be pulled from an RSS feed and shown in the app. Later, I would like to allow readers to comment and post on my forum.
Now I don't want them to load the pages or use a browser. Everything should be done in the app and then stored on their devices (Like the Android Central app). I would like to start developing for Android first but have no idea how to start. I have some knowledge in HTML and CSS, would that help?