[SPOILERS] How much of the main story can I skip?

[BOY♂NEXT♂DOOR]

I beat the main story before, and started a new character, but I want to know how much of the main story I can skip. In Fallout 3, you could go straight to Vault 112, and in New Vegas you could ust go north and skip the wild goose chase, but how much can I skip in Fallout 4? Am I only able to skip the Minutemen quest or am I able to skip more (like the Nick Valentine part)?

[JuiceySpice]

almost nothing it sucks, like virgil does not exist until the quest is completed

[fmalfeas]

You can go straight to Diamond City. That's all the skipping I've managed.

[DA REEL NANCY BOI]

You can get Valentine before you get the prompt to go to 114. Eliminating the railroad is always possible and will result in the relevant quest being skipped (it's literally the second-to-last mission)
That's all I can think of. Breaking into Kellogg's place works, but you can't do anything when you get there if you're not at a certain point in the story.
Alternatively, use caqs to skip the entire MQ :D

[Keefr]

Don't use caqs it can glitch the game, cause crashes, ect, its very unreliable. Use console commands or a "bat" file to skip, simply hit the tilde key ` on U.S. keyboards it is generally next to the 1 key in upper left corner and type these commands in order

CompleteQuest 0001ed86
CompleteQuest 0001c22a
CompleteQuest 001a001c
CompleteQuest 000229e5
CompleteQuest 0001f25e
CompleteQuest 000229e6
CompleteQuest 000229e7
CompleteQuest 000229e9
CompleteQuest 000229ea
CompleteQuest 0006b500
CompleteQuest 000229eb
SetStage 000b1752 200

Make sure to type them exactly, or if it is too much of a hassle here is a txt file that will do it automatically, simply put it into your fallout folder, wherever your Fallout4.exe is, then in the console type "bat skip" without the quotes.

This will set you to the infiltration of the institute where you chose your faction to help you build the teleporter

https://www.dropbox.com/s/dwxvn0eii7g84jh/skip.txt?dl=0

Else simply copy the commands into a txt file of your own and follow the steps