Welcome to the site! If you enjoyed one of Endmaster's stories, you'll surely enjoy his other ones (although I recommend you start with the shorter ones like Rogues before going through Eternal). Ninjapikta also has some awesome stories, both grimdark and not. As a general rule of thumb, you can always go through featured stories, because they're featured for a reason.
On the topic of writing storygames, fear not, because you can do so with 0 coding knowledge. All you need is to write and link pages together; however, I would recommend you learn at least a little bit of variables and scripting, because it can add a lot of depth to a storygame, especially if done well. Oh, and stay away from items.
That's all from me, so do enjoy your time around here!
Welcome to the site! Writing here is fun and easy. The community is fairly active and helpful on the forums. Feel free to post in the writing workshop if you have questions. There is also a "Help & Info" tab on the left of your browser that is neat. Look there for guides in various areas (including how to make your own story, link pages together, and do other basics). I made a guide that explains some of this called a beginners guide to chooseyourstory.com (or something like that).
Good luck and have fun!