There are programs in addition to EndNote that do the same functions and are open source and cross-platform usable. All of the programs can import and export data to each other relatively easily, so find the one that works best for you, but if you find a need to change it will not be a problem.
Purdue University Libraries support the use of EndNote for citation management. EndNote Basic is the web based product and is free for Purdue students to establish an account and use.
Instructions about how to establish an account from off-campus and video tutorials on how to use EndNote are all linked from the EndNote Basic guide.
There are librarians which support different areas of research and their use of EndNote, a list of which can be found on the left side of the EndNote Basic guide page.
How to Write a Literature Review, by Jim Ollhoff
This page is approximately 1/3 of an essay on the topic of writing a literature review. The full essay can be purchased from Amazon in the Kindle format for $2.99. Kindle software is available for smartphones, computers, and tables, so it it not necessary to have a Kindle device to read the document.
The Writing Lab and the Online Writing Lab are excellent resources to assist all students. The Online Writing Lab (OWL) has APA format information, both for document formatting and reference formatting.
Purdue Global offers a comprehensive guide on the differences between quoting, paraphrasing, and summarizing. Included are suggested signal phrases for quoting. Additionally, directions for proper citation for a variety of sources, such as electronic sources and graphics are included. Further reading materials are offered.