Search the internet for information and assistance for science-related queries. Type your question into your favorite search engine, or if your problem is more general, use a search term such as "help with physics homework." To make sure a site has accurate, up-to-date information, stick to quality sources such as those affiliated with a university, government body or scientific association. Blogs and personal sites might have relevant information, but their veracity can be questionable.
Visit the library. Using the library's computer system, search for books, magazines, films and other items related to the question at hand. Visit the reference desk and speak directly with a librarian who knows the system well and can assist in performing thorough research to find all relevant materials. Inquire about inter-library loans and other ways of getting information from neighboring libraries if the local branch does not have sufficient resources to be of help.
Talk to a teacher. If you need help for a science class at school, speak directly the teacher or professor about the subject, discussing what is clear and what remains difficult. Ask if extra assistance or practice assignments are available, and inquire about meeting up before and after class or even on weekends to get extra help. Ask if the teacher recommends any special books or other supplementary materials for further self-study.
Find a tutor. Sometimes it's necessary to augment classroom learning with further intensive study in order to truly understand and master a subject, and a tutor can provide extra assistance. Consult with teachers to see if there is anyone they can recommend and post a notice seeking a tutor on a bulletin board or school website. Arrange interviews with potential tutors to see if they are a good match and qualified to teach about the subject.