I'm not sure this matches with /sci, but I hope so.

Could anyone recommend me any way to ingest more knowledge in relative short period? I work, practise two languages and some IT shit, therefore I need any chemical help to deal with it better. I strive to carry on sleep well, avoid any things that contribute to distract me, however I'm still unsatisfied with my progress. Once I tried modafinil and eufinil, but it is quite overrated imho. What are the other solutions that make my progress better?