E-resources

Short form for electronic journal.

A journal published and distributed in electronic form, mostly online on the Internet.

E-journals are both online-only or electronic versions of printed journals.

Most scholarly and academic journals are at present produced and made available as e-journals, because of the relevant advantages in terms of diffusion, accessibility, impact.

Costs are largely influenced by publishers' policies; the open access movement has an important and increasing role in the e-journals market.

* if you mean just ONE publisher you should say "the publisher's policies". But I think you probably mean publishers here, so you should say "publishers' policies" (or "the publishers' policies" both correct but with a slightly different angle)

Device used to read digital resources such as e-books and e-journals. It is a portable device that permits to store a great quantity of digital documents; it allowsalso direct e-books' download trough wifi systems. E-reader screens are designed to allow the users a comfortable reading.

software : it is not a software, as far as I know, but a device which obviously requires some software in order to work.

resoruces: resources (just a mistype, obviously :))

storaging: I found some cases on the web, but the main language dictionaries do not have this entry. I would say "permits to store",  "allows to store" or "permits the storage of".

permits: Note that permit strongly stresses the "give permission to" while "allow" also means "make it possible to..."

from: I suggest "through wi-fi networks", "from" a publisher's website

confortable: comfortable

Digital version of a printed (or not printed) book. It can be read on a ebook reader, on a pc or on a tablet.