My partner has a old 2003 Ford Focus and I want to change the radio from stock to something that has bluetooth.
Here's my understanding on aftermarket radio:

• Every car is different, depends on the dashboard and the radio harness thing
• Finding out what what radio to buy/how to fit it is usually done by finding old YouTube videos from someone with 100 followers from 2008
• Sometimes it can be really easy and sometimes it can be really annoying to fit

Is my understanding correct?
I've tried this before with another car I had (a 2009 Mitsubishu Lancer) and it was such a nightmare I gave up. So I want to double check with any car nerds that I'm not missing anything obvious or there's no source of truth or something to go checkout/learn.

Any help would be appreciated, otherwise I'm going to go and find some 180p videos from 2008 to watch.

Edit @smithsonian, @Weldawadyathink, @scottc
Thabks for your replies, the site looks great for what I'm looking for. I'm not US but they do ship internationally. Plus it will at least help me work out what parts I might need!
Glad something like this exists, thank god.

I’m about to take a road trip and I want to be able to easily play my music and it would be a huge pain to do this with iTunes. I’ve got VLC but the UI leaves much to be desired. I can’t even view my music by album in CarPlay, which is how I’m going to be accessing my music. There are tons of music playing apps out there but they are all varying degrees of sketchy. Does anyone have any recommendations?

I have a 2014 CRV, it loses oil horribly and I'm going to have to check it a couple times a week or risk my engine. The mechanic was hesitant to even help me limp it along and said basically there's no fix besides replacing the engine. He put 3 quarts in that day. I didn't have a warning it was low other than the loud start.

I'm trying to decide if it's worth continuing maintenance on this car or worth trading in now while the engine is still kicking (and switching to an electric used car probably) or nursing this along for another year or so. We have a car loan on a wheelchair van we're trying to refinance which means I'll be looking at cars that are about equivalent in value to the CRV.

Thoughts? Advice? Besides keeping oil in my car because I didn't know it was this bad. Ó⁠╭⁠╮⁠Ò

Just though it might be nice to have a space for general EV discussion here on Tildes. The only other space I know of to talk on the subject is r/electricvehicles, which has gotten big enough to get polarized and echo-chambery… prepare to get bombarded if you say anything positive about EV models from Japanese manufacturers or suggest that a used Chevy Bolt isn’t a great fit for everybody, for example.

Anyway, what is everybody driving and how do you like it? Has it given you any trouble? Any upcoming models you’re excited about or interested in? If you don’t drive one now, is there a model you’re eying?

Right now I’m driving a 2023 Nissan Ariya Platinum+, which I chose because it’s what I could get a reasonable lease deal on without too much trouble. It’s been great for the most part but I’d be lying if I said it wasn’t total overkill for my needs… something more like a modernized electric Golf would better fit me, but those don’t exist in the US, so here I am.

The upcoming model I’m most interested in is by far the Rivian R3. It’s sized about the same as a Golf, the retro styling is cool, and its got several high-utility features that make it almost seem like a reincarnation of the Toyota Matrix (fold flat seats including front passenger, back hatch window that can open to accommodate long objects, etc) without the Matrix’s weaknesses. The Pacific Northwest inspired interior of the higher end R3X model looks gorgeous too and is a welcome departure from the sterile grayscale interiors that EVs have become known for.