Many local public libraries in the US, especially those in large urban areas, have excellent access to a full range of databases with full text journal articles. If you are not part of a large university, check with your library to see what they have.
While these online databases are free, there is no guarantee that the resources (such as journal articles) are also free.
For general reference assistance, please click here: http://askus.library.tmc.edu/
For Faculty and Staff consultations, please click here: http://library.tmc.edu/services/research_consultation/