How to sign up or begin taking the courses in aleks

[dfrecore]

So if I do as suggested and make up to 70% or more of the initial assessment or make closer to 70% and then work through the pie to make up 70% or more , have I passed and ended the course?

You have to get a 70% on an assessment (not a quiz). So if you only have 19%, then you probably can't get away with any of the tricks people use to force an assessment. You have to actually work through the course, and learn a lot, to get up past 70%, and then get 70% on another assessment.