Well, a good quest order for Witcher 3's story would be to first do the early main quests that lead you to the different regions. For example, do the quests that take you to Novigrad. Once there, explore the city and do some of the side quests related to the main plot. Then, go to the Blood and Wine expansion area and do the quests there as they add a lot to the overall story. Don't forget to also do the quests that are related to Ciri as they are crucial to the main storyline.
In my opinion, starting with the main quests in Velen like 'The Bloody Baron' is a great start. It sets the tone and introduces important characters. Then move on to some of the related side quests in the area that expand on the story and characters you've met. After that, head to Skellige and follow the main quests there which often have a more epic and mythical feel.
I think the best way to experience the story is to follow the main questline in a linear fashion at first. So start with the White Orchard quests, then move on to Velen. In Velen, alternate between main and side quests that seem relevant to the main story. For instance, if a side quest involves a character you've met in a main quest, do it. Then, when you're ready, go to Skellige. In Skellige, again, mix main and side quests. This way, you get the full story without missing out on important details. The side quests often flesh out the world and the characters in ways that enhance the main story. For example, some side quests might give you more background on Geralt's past relationships or on the politics of the regions. So it's important to do them as you progress through the main story.
Chapter 535, "Open Attack I", is the clearest early answer because the buildup finally cashes out in a real clash. The setup is Far beyond the reach of the Forest of Twin Disasters… Beyond the..., but the pressure keeps building through And for the first time… It moved in the open..
Chapter 23, "Found the Wrong One", is the clearest early answer because it turns Wang Ming's situation into a concrete plot event. Early on, Xia Ding, how can his strength be this strong?" Shi Qing was deeply.... By the end, Xia Ding didn't dodge, his punch wind became even more fierce.. Inside the broader family politics storyline, the chapter closes with "Finally found you, let's see where you can run now!, which gives Wang Ming a stronger narrative position and pushes the power growth onward.
Chapter 180, "Exchange Meeting, Murder, Great Xia Gospel", is the clearest early answer because it turns Meng Yuan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Some things can cause a chain reaction. to The monthly exchange meetings have made the leaders of the eleven....
Chapter 155, "Lone Ranger, Xinggu Pass", is the clearest early answer because it pushes Hunting Team into a new phase or setting. It opens with First Year of the Great Xia, March 7th Six kilometers south from the... and closes on The power of that single axe swing far exceeds ordinary imagination.. The key payoff is that the chapter closes with Of course, the most crucial thing was what Xia Hong learned from Gao Yu;
Chapter 53, "Inexplicable Hostility", is the clearest early answer because it turns Wood Puppet Monster's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Just as Xia Hong had previously mentioned, the territory of the Rogel... and follows through with If it's not, then forget it, and we'll head back." "Alright, but....
Chapter 146, "Rage, Murder, Ferocity", is the clearest early answer because it pushes Rage, Murder, Ferocity into a new phase or setting. The setup is Xia Chuan's laughter affected Luo Yuan and Yue Feng as well, and they..., but the pressure keeps building through First of all, the strength of an Intermediate Cold Beast is not weak..
Chapter 39, "Three strikes and you're out.", is the clearest early answer because it turns Shi Qing's situation into a concrete plot event. The chapter turns that into something concrete by moving from Having been the leader of Rogel Camp for fifteen years, Luo Ming... to That day on Great Xia Territory, Da Shi Camp had only five survivors..
Chapter 31, "Upgrading the Bonfire", is the clearest early answer because it turns Wang Ming's situation into a concrete plot event. It opens with Xia Hong knows how precious iron tools are in this world. and closes on Six hundred pounds equals sixty units of iron, which means ten pounds.... The key payoff is that the chapter closes with After reading, Xia Hong was immediately filled with excitement., which gives Wang Ming a stronger narrative position and pushes the power growth onward.
Chapter 157, "The Disappeared Cold Beast, Breakthrough Tide", is the clearest early answer because Xia Chuan finally turns buildup into a real advancement. A useful checkpoint is the way the scene starts with After setting the tone, he paused for a moment and continued:... and follows through with After pondering for a moment, Luo Yuan's eyes suddenly brightened,....
Chapter 34, "Golden-eyed Demon Sheep", is the clearest early answer because it turns Golden-eyed Demon Sheep's situation into a concrete plot event. Early on, Keep pulling back!" The seven of Xia Chuan pulled the Cold Beast.... By the end, Unfortunately, his warning came too late.. Inside the broader battle storyline, the chapter closes with Thud......, which gives Golden-eyed Demon Sheep a stronger narrative position and pushes the power growth onward.