yellowleafdeaf-blog reblogged
Life-Hack
google search any topic followed by ‘filetype:ppt’ and only powerpoints will come up, or a textbook or subject name followed by ‘filetype:pdf’ to find free textbooks in pdf form
google search any topic followed by ‘filetype:ppt’ and only powerpoints will come up, or a textbook or subject name followed by ‘filetype:pdf’ to find free textbooks in pdf form