Tools for mind mapping http://lifehacker.com/five-best-mind-mapping-tools-476534555
Starting your research https://library.ucsc.edu/help/research/start-your-research
Distinguishing between primary and secondary sources http://guides.library.ucsc.edu/primarysecondary
Oops! I plagiarized? http://guides.library.ucla.edu/citing/plagiarism
Citing sources http://guides.library.ucsc.edu/citesources
Diccionario Linguee http://www.linguee.es/