Does the library offer tutorials?
To find research material for various classes, look in Research Guides.
The APA Help guide contains documents showing citation examples and a template to help with APA formatting.
For your question about plagiarism, some instructors use the plagiarism detection tool: Turnitin.com This is a product used by academic institutions to check originality in assignments and research papers. Check with your Instructor to see if your class has an account.
Contact your Campus Library/ARC for personalized help and tutorials.