For beginners, look for structured plans with sample weeks that emphasize breathing, body position, pacing basics, and progressive confidence sets so you can build to your first continuous 500 m without overuse, matching the Beginner Corner and Training Plans & Programs categories.
For triathlon and open water swimmers, choose programs that integrate sighting, drafting, starts, and race‑pace pool sets so pool work translates to sustainable performance in open water.
For masters and performance goals, prioritize quality sets that work threshold, VO₂, and USRPT‑style intervals alongside taper guidance and meet prep to sharpen speed and efficiency.