Tutor gave me a few links to really great tools for essay writing and for taking notes on PDF. There was someone here before that gave me a link to a website where you could access online journals that are not accessible in your own college, but can't remember it.

http://www.zotero.org/ Useful tool for citation and bibliography

http://www.tracker-software.com/product/pdf-xchange-viewer good for making notes on pdfs and highlighting etc.