And here’s a pile of (hopefully still active) links that helped me:

TV Tropes

BUT or THEREFORE. Never AND THEN.

How Not to Be a Clever Writer

Ten Themes to Use in Your Sitcom Spec

A Letter from David Mamet to the Writers of The Unit

HowStuffWorks "How Sitcoms Work"

The Seven Basic Plots

How To Write A TV Script

How to write comedy: Writing sitcom | The Guardian

How To Write A Sitcom

Introduction

Formatting TV Scripts

How to do Script Coverage

How To Pitch A TV Show

How To Create A Comedy Character

Plotting A Show About Nothing

5 Tips for Punching Writer's Block in the Face | Cracked.com

Advice to an aspiring copy editor

25 Insights on Becoming a Better Writer - 99U

Zadie Smith’s 10 Rules of Writing | Brain Pickings

Building Self-Confidence - Stress Management Skills from Mind Tools

WRITERS' ROOM 101: TV Writer Job Titles - Script Magazine

Hollywood Taxonomy – FiveThirtyEight

How To Get An Agent

Getting an Agent

How To Deal With Creative RejectionHow Rejection Breeds Creativity - 99U

Why Great Ideas Get Rejected - 99U

Pilot Season

The Technium: 1,000 True Fans

The Difference Between Good Worldbuilding And Great Worldbuilding

Story Circle

Creative Writing Courses and Ideas: An Online Resource for Writers

Get A Job As A Writers Assistant

How to be a kick-ass writers’ assistant | buchnotes

25 Things You Should Know About Revising And Rewriting | terribleminds: chuck wendig

How To Do Semi-Scripted TV, From A Guy Who Wrote For “Seinfeld” And “Curb”--And Created “The League” | Co.Create | creativity + culture + commerce

Meanwhile” · Futurama · TV Review Futurama: “Meanwhile” · TV Club · The A.V. Club

Ten Sure-Fire Themes to Effectively Use in Your Sitcom Spec Script By Peter J. Fogel | WritersWeekly.com

STORY STRUCTURE: 10 Simple Keys to Effective Plot Structure - Michael Hauge's Story Mastery

https://perell.com/note/but-therefore-rule/

Sitcom Geek: Storylining & Plotting Part 5 – The Principle of Plotting

Sitcom Geek: Storylining & Plotting Part 6 – The Pitfalls of Plotting

Every Story is the Same - YouTube

How Do You Edit an Animated Film? on Vimeo

Pilot Script Checklist

How to Ask for Advice Over Email

Locking Pages

The art of storytelling | Pixar in a Box | Partner content | Khan Academy

All sitcoms use the same plot structure formula.

How to Become a Good Storyteller

Go Into The Story

Screenwriter and author John August

No Film School

5 Reasons a Writer Should Take an Acting Class | Save the Cat!®

The Thirty-Six Dramatic Situations - Wikipedia

The 100 Jokes That Shaped Modern Comedy -- Vulture

The Mind of Marc Andreessen - The New Yorker

How scientists make people laugh to study humor | ideas.ted.com

12 Overlooked Innovators Who Helped Invent the Modern World

Why You Will Fail

Cracking the Sitcom Code - Atlantic Mobile

https://medium.com/@natsuokin/what-i-learned-from-the-maya-design-principle-beb9ce522975

How Drive Was Written

If you’ve made it this far, I respect your commitment! Unfortunately, I'm out of links so respect for your commitment is all I have left besides my schmuck advice.

So here goes: pick your favorite show and write and rewrite what at least two of your friends agree would be the best episode of that show. Then write and rewrite what at least two of your friends agree would be the best episodes of your next two favorite shows.

Then start writing original pilots - it’s easier/fun to write characters inspired by the unusual/terrible people in your life as they’re already fully-formed and no one else is writing about your nana.

Also, never stop reading pilot scripts (classic show pilots, current show pilots, shows that have been ordered to pilot pilots, any pilots - they’re all online).

Meanwhile, take any job you can get that’s even remotely near a show (talent agency assistant was my start - UTA had a joblist online, this might be the current iteration), screw up as little as possible, and use this initial job to get a new job slightly closer to a show.

Then repeat until you’re actually working on a show (production assistant, director’s assistant, producer’s assistant, actor’s assistant, anything). Be indispensable, learn, and work your way up to writers assistant (your ascent will likely span multiple shows due to a million things that you have no control over).

Type fast, type well, have an encyclopedic knowledge about all aspects of the show (characters, episodes, production statuses, network and studio execs, anything), anticipate problems in scripts and production, and, when you see an opening (if you’re lucky enough to be in a writers room that allows writers assistants to pitch), pitch until they beg you to stop.

Also, film your stuff and put it out there in the world (I definitely didn’t do this enough).

Most importantly, the entire time, be kind/helpful, network, mentor, and try not to get caught up in the million things that you have no control over. Good luck! There’s no better place on earth than a writers room.

If you want notes on your script, I’m game but coverage is work so I do charge a fee.

And, one last thing, telling your ad agency to freelance me also helps. Thanks!