For the ones who know a little more...
Elementary
Present Simple | Present Perfect (only for comprehension)
Present Perfect | Adjectives (comp/sup) | Preps of place
Past Continuous with Past Simple | Gerund and Infinitive | Adjectives
Present Simple | Have/Has | Present Continuous | Prepositions of place
Past Simple | There is | Prepositions of place
Prepositions of movement | A bit of Present Simple and Past Simple (just for reading comprehension)
Present Simple (Questions) | Can