Hunting for solid fluids study guides used to feel like treasure hunting for me, but over the years I've found a handful of places that reliably deliver clear explanations, worked problems, and intuition. My first stop is usually major university course pages — many professors post lecture notes, homework sets, and past exams online. MIT OpenCourseWare, for example, has full courses on fluid mechanics with lecture notes and problem sets that mirror actual classroom pacing. I also
search for pdfs of classic textbooks like 'Fundamentals of Fluid Mechanics' and 'Fox and McDonald’s Introduction to Fluid Mechanics' because skimming a chapter and then doing end-of-chapter problems builds confidence fast.
Video lectures are a lifesaver when equations start to blur. YouTube channels and university-recorded lectures translate abstract derivations into visual steps; pairing a lecture video with a written guide or 'Schaum’s Outlines' problems is how I cemented boundary layer concepts and Reynolds-number intuition. For applied and computational angles, tutorials for OpenFOAM and ANSYS or short courses on Coursera and edX explain how the theory maps to simulations. I also keep an eye on community resources — notes shared on GitHub repositories, Engineering Stack Exchange threads, and curated playlists that compile the best explanations of the Navier–Stokes equations.
My habit is to mix formats: read a textbook section, watch a 20-minute lecture, then hammer problems and compare solutions online. That loop turns confusing derivations into muscle memory. If you're trying to find guides, start by searching university pages and MIT OCW, supplement with a good textbook like 'White's Fluid Mechanics' and then bridge gaps with videos and problem collections — that combo kept me sane through the hardest parts, and I still enjoy those little 'aha' moments.