The "Problems" section is graded as Level A (basic), Level B (average), and Level C (challenging).

Having the PDF is only 10% of the battle. Here is a 4-step workflow to get an A+.

The strength of this resource lies in its methodical organization. It is generally divided into core modules that mirror standard North American curriculums:

Arithmetic and geometric sequences, infinite sums, and Pascal's Triangle. The theory here is extremely condensed; you may need to read the "solved problems" to fully grasp the Binomial Expansion.