Hmm I've been re-reading my posts, and imagining what they'd look like if I was reading them 3 years ago when I was a total newbie who'd only ever taken photos with point & shoot cameras, mostly with my finger ending up in the middle of the photo

... suddenly what I'd typed here appeared to be in some kind of alien dialect. I appreciate it's not all that helpful, at least not until you understand some of the basic terms and ideas.
So now I'll try to explain what an SLR is, why you're getting one, and how you'll be taking photos... hope this makes some kind of sense...
SLRs...
SLR stands for Single Lens Reflex. Essentially, what you need to know is that an SLR includes a mirror and a prism, so that you effectively look through the lens rather than just through the viewfinder. Therefore your finger doesn't end up in the photo :mrgreen:.
SLRs have removable and interchangeable lenses. This means that you're not buying an 80-200mm SLR, but an SLR with an 80mm-200mm lens. This can be changed for example with a 19mm lens, or a 2000mm lens if you have great big stacks of money. It's as simple as clicking and sliding or possibly unscrewing one lens and popping another on.
Lenses...
The great advantage of this is that you can use the lens that's most appropriate for the situation. So for holiday photos, a zoom lens, say 28-200mm would be perfect because it lets you go from a reasonably wide angle to zooming in pretty close. Bear in mind that a "zoom lens" does not mean one that lets you take a photo of something far away - it simply means you can zoom in and out. For photos of a specific subject where you want a sharper-looking picture, a
prime lens would be better.
A what? A prime lens is a fixed focal length - you can't zoom in and out. Instead of being 80-200mm or 20-100mm it might be 50mm, 80mm or 1000mm. So if you can't zoom, why would you want one? Basically because the photo will look better. Think of the zoom lens as a Swiss army knife which is quite good in lots of different situations, and the prime lens as an electric screwdriver which is better for that specific task (see how I add to my macho-ness by using tools as an analogy :mrgreen: ).
When looking at lenses you'll also want to look at the range of
aperture settings on the lens...
Aperture
Aperture (along with shutter speed) determing how much light will be allowed in. Someone else can probably explain the technical bits better, but I'll just say that the wider the range of apertures, the more control you'll have over how the photo looks. With an aperture of F22 everything should be in focus so this might be better for landscapes; with an aperture of F1.7 you'll have much less
depth of field so you could use this for portraits; the person you're focusing on will be clearly in focus, and the background blurred.
Aperture alone however does not decide how the photo will turn out; you need a good combination of aperture and
shutter speed...
Shutter Speed
The shutter is, put simply, a door which opens to allow light onto the film and then closes again. The amount of light allowed in depends on the aperture and also the length of time the shutter is open. Therefore you want an SLR with a decent range of shutter speeds - at least from 1 second to 1/1000th of a second, with a "bulb" option to allow you to control the shutter speed yourself (so you could keep it open for 5 minutes if you really wanted).
So getting a properly exposed photo depends on aperture, shutter speed... and
film...
Film
Yep, it gets more complicated. Film speed significantly affects what combination of aperture and shutter speed you need to get decent exposure. The three factors are all linked together. Let me give an example - on a reasonably clear day you might want to take a photo with an aperture of F8, at a shutter speed of 1/60th of a second, using a film with a speed of ISO100. Say the sun disappears for a bit behind the clouds; you've still got 100-speed film in your camera so you have to have a lower shutter speed (i.e. let light in for longer), or alternatively you could open up the aperture more, although this would affect the depth of field. If on the other hand you knew beforehand that it would be a cloudy day, you could load ISO400 speed film into the camera and then continue using the smaller aperture and faster shutter speed. Most cameras (including cheap point-and-shoots) will accept different speed films and will decide how to expose the photo based on what speed film is being used, but SLRs give you control of aperture and shutter speed, and some require or allow you to set the film speed yourself - which means you can 'lie' to the camera by telling it the ISO200 film speed is actually ISO100 or ISO400, if you really want to.
Finally, an important point which I should probably have put earlier...
Focus...
I don't need to explain that getting the subject in focus is important, but it might be worth pointing out that with an SLR you have far more control over focus than you would with a point and shoot camera. Older SLR cameras require you to focus manually - which isn't a bad thing at all - and newer ones will allow you to do so, but will probably feature
autofocus - they will focus for you. Autofocus on most recent SLRs tends to be pretty good - accurate and quick - but if you're buying second-hand then I'd warn against getting autofocus SLRs from the earlier part of the 1990s, since they can take ages to focus and even then may not focus all that well.
I've gone on for far too long now, so it's probably a good idea to bring this back to...
Which SLR?
It depends. With a good modern SLR like a Canon EOS or the Nikon F75 I mentioned then you can take it out the bag, point it at almost anything, press the shutter release button and get a decent photo out of it using 400-speed film. This sort of camera will focus for you and will also control shutter speed and aperture, using a built-in light meter to decide what combination to use. If instead you're really interested in learning about the 'theory' of photography (or just want to spend less money) then I believe it's best to go for an older, manual focus or even fully manual camera. Old Olympus and Minolta SLRs are great, but I personally think you'd be best off with a Pentax. Apart from anything else, lenses for Pentax cameras are absolutely everywhere and are therefore usually very very cheap - but also very very good (long as they're made by Pentax). When I suggested the Nikon earlier, I think I had misread your first post; I got the impression that you
wanted to spend up to £1000 on a camera :lmao:. If you are happy spending £300 on the camera before even looking at accessories, then it's still a good choice. If on the other hand you'd rather spend less, you can get a second-hand Pentax P30, P30T or P30N for next to nothing - £25-£50 on Ebay, £50-£100 in shops depending on condition. Why am I being so specific in my recommendation? Well, let's just say I have two, and still want more

. This camera is manual focus, but can set aperture and shutter speed automatically, set aperture automatically while you set shutter speed or vice versa, or let you set everything manually. Obviously you'd have to try it first to see if you're happy using manual focus. But the reason I'd recommend such a camera is that it's
designed as a manual camera, unlike many modern SLRs which are designed as automatic cameras and which seem built to make manual operation as difficult as possible, as if they're trying to make traditional photographers extinct :x.
Terri and anyone else, please feel free to correct me if I've got anything wrong - which is pretty likely
