That being said, welcome to my little educational thread on Model Railroading OpenTTD. Here are my tutorials.
EDIT: Tfw you do the image hosting incorrectly because you haven't used a forum since 2014. Will be fixed.
EDIT2: Image hosting fixed.

EDIT3: Image hosting... not fixed. Fixing.
Model-Railroadizing OTTD 101: An Introduction
Now I'm not an expert but Transport Tycoon is an OLD game. I started playing this game when I was maybe six years old on Windows 98, back when everything was beige. All I would do was mess around with running trains and building tracks places with no real purpose - I was just a kid who liked trains. Later on I came back to it as a young-adult and learned to actually play the game a bit. I would connect every industry and town, beat all the scenarios, etc. etc. but even in the early 2000s the game was showing its age. Maps were small, basic features were missing, and functionality was limited so I moved on. Once you made a bunch of money and bought out your competitors the game got stale quickly.

Safe to say, this is as far as the original game will get you in terms of gameplay. It ain't much. Playing for money in this game quickly becomes far too easy and ends up doing nothing but slowing you down a bit rather then something to overcome with a strategy or a tactic. I see many people coming in the discord and talking about how much money they're making and I'm here to say – you're missing the best part. You have a train game with the most operational depth at scale of all time at your disposal and you're here to make money? I am here to challenge this notion.
So fast forward to now, the year of our lord 2023 – the game has gone through multiple open source iterations and has been essentially been being modded for decades. What happens to a game when it gets modded for decades? Well you get OTTD in it's current form. The Vanilla version has seen many updates, new features added, newGRFs made and most important of all – Patch Packs.

I won't get into the weeds of explaining the infrastructure of an open source project but all you need to know is that the most popular patch pack by far is the legendary JGR Patch Pack. It adds a dizzying array of quality of life improvements, performance changes, entirely new sets of features and really turns the already vastly improved Vanilla version into a game with immense amounts of depth. JGR's patch pack makes everything I will show you here possible.

From one of it's many time saving features, to multiple schedule dispatch to the ability to play enormous country sized maps (and I'm not joking about this, the scale here is unparalleled for any similar game) on any potato computer it gives you the ability to essentially create your own model railroad sandbox on a scale that your Transport Fevers or Railroad Empires can only imagine. Express trains that take 30 real life minutes to go from end to end, massive cities with their own metro systems, neighborhoods, industrial areas, ports and 20 platform stations. It all makes a little more sense when you're able to just spread things out a bit.

This is a screenshot from a game currently running on my own private server. It is 8192 tiles by 4096 tiles. We've been working on this game for months and are still barely scratching the surface. Major cities are the size of entire scenarios from the vanilla game. There's detail, there's Shinkansens that go from one side of the island to the other, there's freight trains, there's passenger trains. The trains all have schedules, places to be, connections to make, busy rush hours to deal with and this is all able to be reflected in game. There's no real “gameplay” goals but foamers spend thousands of dollars and years of their time on small layouts in their basements with no real goal other then finishing it and running trains – so why not do the same thing here? For free? With no space limitations?

Now sure - there's no pretty 3D graphics like newer games and obviously this isn't the same as having real moving models moving around your layout, but it costs nothing to play and doesn't take 32 gigs of RAM to run modded. There is some give and take – I will not lie to you and say this is not a journey you take without pain. The foundation of this game is still almost 3 decades old and is developed entirely by volunteers and enthusiasts. This leads to some strange limitations and just a general overall un-intuitiveness to the whole experience. You'll spend hours working on some tedious thing only to realize if you ctrl clicked in the right place that same process would take 5 minutes. It's one of the reasons I think this style of play has only relegated itself to veterans of the game who've been playing for years and years.
That's where I come in. I will (badly) try and lead you into enlightenment. Turn on money cheat and magic bulldozer, forget about legacy TTD gameplay, and embrace the strange, frustrating, charming, powerful beast that is Open Transport Tycoon Deluxe. You've realized the philosophical shift from "tycoon game" to "charming 2d train and city sandbox" and now you're ready to hop on board.