Again, the use of little words like "bien" and "tout" are common in French and not direct translations from English.  A unit explaining the uses of these two simple words would be really helpful.  
"Il a bien compris."  "Il a tout compris."  "J'en ai bien envie." "Elle est tout heureuse."  "Il y a bien de choses."  "Il est a des kilometres de toute trace de civilisation." 
Not trying to be a pest, but I would really like to master these simple little words and phrases to feel closer to fluent.  Thanks.