A collection is a set of learning materials used in SuperMemo. Remember that it is always best to create your own learning material (e.g. with incremental reading). You can download collections immediately after ordering! If you have problems with downloading, write to us. Please see if the collection can be used with your version of SuperMemo. Advanced English 2018 $53.00 Advanced English 2014 Regular price: $29.00 Sale price: $19.00 German at Beginner's Level Regular price: $17.00 Sale price: $13.00 Basic Spanish (by Jens Buurgaard Nielsen) $17.00 Intermediate Spanish $12.90 English Irregular Verbs $13.00 Basic Italian $11.10 American States $15.70 English Grammar $9.00 Basic Spanish $6.00 Biochemistry $8.40 Country Locations $6.90 Kanji $15.80 This and That on History $9.30 Idiomatic English $13.90 Phrasal Verbs $6.00 Basic French $6.00 Tip of My Tongue $10.50 Computer English $6.00 Business English $11.70 Molecular Mechanisms of Memory $10.00 PERL $2.00 Katakana $7.50 Basic Portuguese $9.60 Visual Basic $6.00 Neurosciences $6.00 Basic German $12.40 Esperanto $12.80 Physiology $6.00 Hiragana $7.50 Famous Painters $10.90 Delphi $9.10 Windows NT $6.00 Mathematical Formulas $8.50 English Proverbs and Quotations $6.00 Basic Polish $14.60 Borland Pascal $8.50 Basic English $13.70 Chinese Characters $14.00 General Medicine $6.00 Immunology $6.00 Flags of the World $6.00 Trig Functions $6.00 Humorous English $6.00 Japanese Characters - Readings $19.50 Basic Dutch $9.80 Assembler 8086 $6.00 Microbiology $6.00 English in General Medicine $11.80 Endocrinology $6.00 Multiplication Table $6.00 TOEFL Training $6.00 Quotations, Quips and Proverbs $2.00 With SuperMemo you can forget about forgetting!