Vectors - Finding Magnitude or Length. I give the formula, and do a couple examples of finding the magitude, or length, or a vector. Nothing heavy!
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1. The Span of a Set of Vectors
2. Determinants to Find the Area of a Polygon
3. Determinants to Find the Area of a Triangle
4. Solving a 3 x 3 System of Equations Using the Inverse
5. Determinant of a 2 x 2 Matrix - A Few Basic Questions
6. Finding the Inverse of a 3 x 3 Matrix using Determinants and Cofactors - Example 3
7. Finding the Inverse of a 3 x 3 Matrix using Determinants and Cofactors - Example 2
8. Finding the Inverse of a 3 x 3 Matrix using Determinants and Cofactors - Example 1
9. Cramer's Rule to Solve a System of 3 Linear Equations - Example 2
10. Cramer's Rule to Solve a System of 3 Linear Equations - Example 1
11. Using Gauss-Jordan to Solve a System of Three Linear Equations - Example 2
12. Using Gauss-Jordan to Solve a System of Three Linear Equations - Example 1
13. Solving a Dependent System of Linear Equations involving 3 Variables
14. Systems of Linear Equations - Inconsistent Systems Using Elimination by Addition - Example 3
15. Systems of Linear Equations - Inconsistent Systems Using Elimination by Addition - Example 2
16. Systems of Linear Equations - Inconsistent Systems Using Elimination by Addition - Example 1
17. Solving a System of Equations Involving 3 Variables Using Elimination by Addition - Example 3
18. Solving a System of Equations Involving 3 Variables Using Elimination by Addition - Example 2
19. Solving a System of Equations Involving 3 Variables Using Elimination by Addition - Example 1
20. Finding the Determinant of a 3 x 3 matrix
21. Row Reducing a Matrix - Systems of Linear Equations - Part 2
22. Row Reducing a Matrix - Systems of Linear Equations - Part 1
23. Solving Systems of Equations Using Elimination By Addition
24. Multiplying Matrices - Example 1
25. Matrix Operations
26. Orthogonal Projections - Scalar and Vector Projections
27. An Introduction to the Dot Product
28. Sketching Sums and Differences of Vectors
29. Word Problems Involving Velocity or Other Forces (Vectors), Ex 3.
30. Word Problems Involving Velocity or Other Forces (Vectors), Ex 2
31. Word Problems Involving Velocity or Other Forces (Vectors), Ex 1
32. Finding a Unit Vector, Ex 2
33. Finding a Unit Vector, Ex 1
34. Finding the Components of a Vector, Ex 2
35. Finding the Components of a Vector, Ex 1
36. Vector Addition and Scalar Multiplication, Example 2
37. Vector Addition and Scalar Multiplication, Example 1
38. Magnitude and Direction of a Vector, Example 3
39. Magnitude and Direction of a Vector, Example 2
40. Magnitude and Direction of a Vector, Example 1
41. When Are Two Vectors Considered to Be the Same?
42. An Introduction to Vectors, Part 1
43. Finding the Vector Equation of a Line
44. Vector Basics - Algebraic Representations Part 2
45. Vector Basics - Algebraic Representations
46. Vector Basics - Drawing Vectors/ Vector Addition
47. Vectors - The Dot Product
48. Vectors - Finding Magnitude or Length
49. Linear Independence and Linear Dependence, Ex 2
50. Linear Independence and Linear Dependence, Ex 1
51. Homogeneous Systems of Linear Equations - Trivial and Nontrivial Solutions, Part 2
52. Homogeneous Systems of Linear Equations - Trivial and Nontrivial Solutions, Part 1
53. Useful Things to Remember About Linearly Independent Vectors
54. Basis for a Set of Vectors
55. Useful Things to Remember About Linearly Independent Vectors
56. Procedure to Find a Basis for a Set of Vectors
57. Linear Transformations , Example 1, Part 2 of 2
58. Linear Transformations , Example 1, Part 1 of 2

Patrick offers a series of 58 short lectures covering everything you need to know for elementary linear algebra. His lectures are well organized, and straight to the point. You will find it to be a great review for classes and exams.