Based on thousands of forum posts and student reviews, certain chapters in the 7th edition cause the most distress. If you are seeking solutions, pay special attention to these:

Current mirrors, active loads, and differential pairs. The solutions here are invaluable because they combine DC analysis with AC small-signal half-circuits. Without a solution guide, it is nearly impossible to know if you split the tail current correctly.

Current mirrors, active loads, differential pairs. Without the solution manual, you might spend hours on a single problem. The official solutions often introduce and small-signal models in a tabular format that is pure gold for exam prep.