Start early - at least a week before the exam or test.
Check with your physics tutor to make sure he or she is
available during this critical time. Schedule a meeting
with your study group. Allocate time for the following
tasks.

1. Complete assignments and readings that have not
yet been completed.

2. Before attempting problem-solving, firm up any
conceptual areas in which you feel weak. Review your
readings in those areas and answer the following
about your reading:
    a. What is the main idea in your own words.
    b. List and define important terms.
    c. Explain clearly the concept in your own words.
    d. Draw a figurative representation of the main idea.
    e. If you still don't understand something, list
questions that you need answered and discuss them
with your physics tutor.

3. For each unit, summarize your notes into a well
organized annotated outline. (Simply reading notes is
ineffective.) Write main ideas, definitions, and
equations. For the equations define the units, meaning
of each variable, and describe the conditions under
which the equation applies and conditions under which
the equation does not apply. Do not take the time to
write all the possible rearrangements of the equation -
you'll burn out. Using your course syllabus as a
guideline is a good idea. Talking through the main
ideas and comparing notes within your study group is a
good way to ensure you have captured all the main
concepts and summarized them correctly.

4. For each unit redo example problems. Actually put
pen to paper to write out the complete solution - just
reading is ineffective. Start with problems that gave
you difficulty on assignments or tests, then sample
problems given to you by the prof or in your readings. If
you have more time do as many practice problems and

free quizzes as you can from Physics 24/7's physics homework help.

5. Ask your prof for old exams and write them (reading
alone is ineffective). Writing old exams enables you to
get accustomed to the prof's style, and tests your
preparation. Be aware that one exam rarely covers the
entire course. The exam you will write is not likely to be
the same as the old exams. List the questions you don't
know how to do and discuss them with your physics tutor.