For the best experience, most guides recommend following the canon storyline while skipping large blocks of "filler" that were not in the original manga.
The OVA Memories in the Rain is an alternate retelling of episodes 8-9 and can be watched first or after episode 9. Soul Society Arcs (Episodes 21-63)
Includes Episode 5. This arc introduces Ichigo's powers and the basic rules of the Soul Society. Watch Bleach - 005
These arcs do not affect the main plot. Many fans recommend skipping them on a first watch and returning to them later if you want more content.
Widely considered the series' peak. Watch every episode here, though some guides suggest skipping episode 33 and 50 as they are standalone filler. For the best experience, most guides recommend following
110-127, 138-167, 190-203, 206-212, and 215-310. The Lost Agent / Fullbring Arc (Episodes 343-366) The final arc of the original 2004 series. Thousand-Year Blood War (2022–Present)
The modern continuation adapting the manga's final war arc. This should be watched only after completing the original 366 episodes (minus fillers). This arc introduces Ichigo's powers and the basic
Below is a long-form guide for the overall Bleach watch order, covering the original series, movies, and the continuation.