The SF Writing Program aims to provide free writing resources to any aspiring writers. There are worksheets, activity sets, and general tips for topics such as pacing, character development, plot-building, and poetry. The program is self-paced and all about what you want to get out of it.
There are three courses: Building Your Plot, Creating Your Character, and Striking Your Balance. The site is located at https://sfwriting.thinkific.com. All you have to do is put in your email to join!