Where could I find primary and secondary sources for Michael Faraday?
Go to your library and search the catalog. If no joy, ask a librarian for help.
The library will most likely have secondary stuff (bios and the like.) Read those and mine the footnotes for pointers to primary stuff.
nb: most/all of the primary stuff will probably be off-site somewhere. Speak with your instructor regarding how to handle this. Unless this is for a huge project, I'd probably allow a student to rely on primary source material quoted in a secondary work. YMMV.
'The Electric Life of Michael Faraday' bibliography?
ETA: seems as though it won't link directly to the bibliography, but it's available through the table of contents.