I want to create a choice-based, almost-all-text RPG. Where should I start?

Hi there! I have a little experience with creating tabletop roleplaying games and have a deep love for RPGs where player choice is integral to how the story turns out.

However, I have absolutely zero experience creating video games, so I want to start off small and create what is essentially a visual novel or something close to it. I'm not an artist, so it will more than likely consist of text only, unless I can commission a few mood-setting pieces.

Does anyone have any recommendations for simple game design programs that I can use for such a project, or resources on how to design simple games? Any help would be appreciated!