Some tips given out to ease learning.
Unit circle (special)
Topic 1.1 - Angle Measure
Topic 1.2 - Trigonometry of right triangles
Topic 1.3 - Trigonometric functions of angles
Topic 1.4.1 - Trigonometric graphs
Topic 1.4.2 - (More) Trigonometric graphs
Topic 1.5 - Inverse trigonometric functions and their graphs
Topic 1.6 - The law of sines
Topic 1.7 - The law of cosines