Tell me everything you know about DSLR cameras?

I'm saving up for my first dSLR camera. I'm serious about photography, and it is time to upgrade! My brother has a sony slr(Don't know exactly what kind) But i do not know much about them. I have been trying to learn as much as I can about them. I plan on getting a nikon or canon. Tell me everything about taking pictures with a SLR camera, to owning one, everything. If you could explain ISO, aperture, etc.anything you know!
thanks!

Added (1). To everyone saying I should get a book, I plan on getting one later on, no need for rude comments. I asked about Photography Books before but never got any answers, so i thought I would try asking this way.
If you would like to let me know about good beginner photography books, that would be great too!

Ha, if you are that into photography, I would hope you would at least know what an "aperture" is.

I shoot with a Canon 40D and Canon 50mm f/1.8. I will soon be upgrading to a 5D and 50mm f/1.4 and hopefully an 85mm f/1.8 if funds allow.

I will cover the basics, as EVERYTHING is a lot to ask for when discussing DSLRs.

Aperture- This is actually in the lens, not the camera. It is given a value, e.g. "f/1.4". Basically, the smaller the "f-stop" the larger the aperture is, or the more light it will let it. With a larger aperture, you can shoot in lower light and also get a pleasing out of focus background. Larger apertures are typically expensive. There's however the 50mm f/1.8, which is a very cheap, very good budget lens.

ISO is the sensor's sensitivity to light. The higher the ISO, the brighter the photo and accompanied with that is digital "noise", or speckles of color throughout an image that are typically unattractive. This is similar to grain in a film photo.

Shutter Speed- This is how fast the camera's shutter will open and close. To expose an image, light is cast onto the camera's sensor for a brief to long amount of time. A shutter speed of 1/500th of a second is just that. The faster the shutter speed, the darker the image, and conversely, the slower the shutter speed the brighter the image. With a slower shutter speed, images will blur if you do not have the camera steady, as light is exposing the same subject in different areas of the sensor creating an illusion of motion.

There are crop body sensors and Full Frame sensors. Read more about that here- http://www.digital-photography-school.com/full-frame-sensor-vs-crop-sensor-which-is-right-for-you

Now these are very BASICS and it may take awhile to learn. Photography is very fulfilling if you love it though.

Are you serious?
There are hundreds of books written on this subject!

Instead, I'll point you to some decent books.

Understanding Exposure: http://www.amazon.com/...ockwellcom
Photographic Composition: http://www.amazon.com/...ockwellcom
Portrait Photography - Secrets of Posing and Lighting: http://www.lulu.com/product/paperback/portrait-photography-secrets-of-posing-lighting/9779447

Have fun.

You need to follow this question

Ever heard of BOOKS.
I would suggest you go and buy one on basic digital photography.

There are not enough words on this answer site to explain what you want to know.

There's an excellent series of videos that I suggest watching. It will answer a lot of your questions:

http://www.adorama.com/.../AdoramaTV

Unfortunately, some topics are more advanced than others. You can't learn some topics without knowing about others, as they provide the foundation. You can't know how to use aperture creatively without first knowing about exposure, and so on.