It's one of those areas where, technically, making any copies of any copyrighted material is illegal. But, there's absolutely no sense in going after, for example, a student copying an article for studying or writing a report. So no one's going to sue you for that. *
So yes, so long as you aren't distributing or selling said things, you really should be just fine.
* - However, after a few years of students getting to buy cheap copies of numerous articles bound together for classes, the publishing industry got wise to it and now royalties must be paid for those things. Which is why, if you are or have been a college student in the last 15-20 years, you'll have noticed that photocopied books made at Kinko's and the like of selected readings and article reprints are ridiculously expensive, and can't be resold at the end of the semester.