I find it more approachable to use the question/answer format compared to reading all of the instructions on detail, determining if that particular section applies to me, and wondering if I found every form to cover every situation from the last year.

An example is figuring out whether I would owe taxes on the gain from the sale of a primary residence I owned for less than 2 years. Figuring that out manually took some googling, finding an IRS guide, reading multiple pages of regulations along with exceptions and determining where I stood.

Another is determining HSA contribution limits when my wife and I were in individual HDHP plans part of the year, and a family plan the remainder.