When researching One Piece storyline(I need a new hobby, One Piece is getting old on me.) I come to conclude how orgenized Oda is. This story is straigthforward which should have been boring but Oda seems to sweeten that by throwing in differant unique events that shapes the story very well preserving it from the "boring" level making it fun to read. Here's how I label them:
Chapter Event
(1. East Blue Sega)
(1. Captain Morgen Arc)
1-2: Luffy's Frist Adventure
2-7: Shelltown
(2. Buggy the Clown Arc)
8-11: Nami's Plan
12-20: Buggy Crew Figth
21-22 Escaping Town
(3. Captain Kuro Arc)
23-26: Usopp's Story
27-36: War on the Slope
37-39: Saving Kaya
40-41: Usopp Joins
(4. Baratie Arc)
42-45: Baratie Chore
46-49: Enter Don Krieg
50-52: Mihawk's Deadly Dual
53-61: Sanji's Debt
62-66: Don Krieg Battle
67-68: Sanji Comes Along
(5. Arlong Arc)
69-77: Nami and Arlong Fraud
78-83: Advenging Nami
84-89: Luffy is Drowning
90-93: Die, Arlong Die!!
94-95: We Got Nami Back
(6. Louge Town Arc)
96-101: Leaving the East Blue
(2. Baroque Works Sega)
( 7. Whiskey Peak)
102-105: Grand Line Introducion
106-111: Zoro Side Story
112-113: Escaping Whiskey Peak
(8. Little Garden Arc)
114-122: Meeting Dorry and Borgy
123-128: Mr. 3 Battle
128-129: Sanji Saves the Day
(9. Drum Island)
130-133: Navigator Fell Ill
134-139: To Dr. Kureha
140-152: Wapol's Revange
153-154: Welcome Tony Tony Chopper
(10. Alabasta Arc)
155-158: Nanohana Rumble
159-166: Yuba Journey
167-176: Rainbase Imprisonment
177-183: Rush to Alubarna
184-196: Baroque Works War
197-201: Luffy Returns!
202-209: Bomb Plot
210-213: The War Ends
214-216: Leaving Alabasta
217-218: Hello Nico Robin
(3. Skypiea Sega)
(11. Jaya Arc)
219-222: The Falling Ship Mystery
223-226: Stop Dreaming
227-230: Meeting Monbran
231-236: Bounty Rise Again
(12. Skypiea Arc)
237-244: Angel Beach
245-250: Upperyard Adventure
251-255: Getting Prepared
256-265: Cyandorian Battle
266-271: Trial of Iron
272-276: Confronting Eneru
277-285: Maxim Game
286-294: Norland Truth
295-299: Struggle to Eneru
300-302: Return to the Blue Sea
(4. Shipwight Sega)
(13. Davy Back Figth Arc)
303-305: Entering Davy Back Figth
306-308: Donut Race
309-313: Groggy Ring
314-317: Figthing Foxy
318-321: Closure
(14. Water 7 Arc)
322-329: Small Adventure in Water 7
330-339: Luffy's Bad Day
340-349: Gallery-La's HQ Attack
350-359: In the Warehouse
360-368: Rescue Mission
370-379: Arrival to Anease Lobby
Norland flasback is the olny flashback I felt it's nessarry to seperate.
It's intersting to see what Oda stored in next. :)
Edit: Forget to add in more details