Yes, in the 'sources' tab, you can select 'in order' and it will work through sources in the order that you add them. You can also select 'difficult' or 'easy',

Yes, in the 'sources' tab, you can select 'in order' and it will work through sources in the order that you add them. You can also select 'difficult' or 'easy', and it will suggest lessons based on analysis of your previous performance (i.e. it will score the chunks compared to similar lessons you've completed in the past).