DennisN said:
I've got some basic stuff to say about gear, so I'll put that in another post here in a while..
Regarding gear I've shot with smartphones, compact cameras and system cameras (all digital) and film cameras when I was younger

, and I'll put some notes in below regarding all of these systems.
1. Smartphones
The good things with smartphones are portability and ease of use.
They can be good for general photography, they have become better and better over the years, and I think this development will continue.
The downside is that smartphones have been a bit limited when it comes to specific types of photography (e.g. macro, tele and wide angle photography), but nowadays there are smartphones with a set of different small cameras/lenses on the same phone.
2. Compact cameras (digital)
A compact camera (point-and-shoot camera) is essentially a dedicated camera but with some limitations due to the fact you can't change the lens on the camera. The compact cameras can have either a lens with a fixed focal length or a zoom lens with focal lengths that can vary between different focal lengths.
Due to this (traditionally at least), you got a bit more flexibility with compact cameras compared to smartphones.
Compact cameras are generally more portable and easy to use than system cameras.
3. System cameras (digital)
System cameras (mirrorless or DSLR) offer the most flexibility of these alternatives, since you can change the lens. On system cameras you can put e.g. standard lenses, wide angle lenses, tele lenses, zoom lenses and macro lenses etc.
The downside is that system cameras + a set of lenses thus becomes less portable than the other alternatives. Though today, system cameras have become more compact and portable than before (and there are different sizes and systems too, e.g. Micro Four Thirds, APS-C, Full Frame).
Edit: Also, generally, system cameras & lenses are usually more expensive than compact cameras.
4. Other camera types
I'd like to say there are other cameras types too, e.g. film cameras (analog) of different kinds and medium format cameras.
Lens types (typically, for full frame cameras*):
- Wide angle lenses (focal lengths between ca 12 - 35 mm)
- Standard lenses (focal lengths between ca 35 - 50 mm)
- Portrait lenses (focal lengths between ca 80 - 100 mm)
- Tele lenses (focal lengths between ca 100 - 400 mm and up)
- Zoom lenses (lenses where you can vary the focal length between two values let's say 35 - 135mm; there are many various zoom lenses with different focal length intervals)
- Macro lenses (dedicated to close-up photography, focal lengths between ca 50 - 100 mm)
- There are also some other a bit more unusual lens types, e.g. fisheye lenses.
* The focal lengths and lens types become a bit different depending on if you use a
Micro Four Thirds,
APS-C or a
Full Frame camera. More info:
Image sensor format.
More info:
Lenses for SLR and DSLR cameras (Wikipedia)
https://en.wikipedia.org/wiki/Lenses_for_SLR_and_DSLR_cameras