give us rooks the lowdown on Surround sound brehs.
what brands, options
cost on a budget.
levels of experience needed to install these.
feed us
Too much information to list here. Search and you'll see pretty quickly.
Basics of sound: a receiver, five or seven speakers, and a subwoofer.
A few receiver brands are Onkyo, Pioneer, Denon, Yamaha. As long as it can support your current and anticipated needs, it'll work. Speakers are the same. All I can say is look for quality build and trust your ears. For a budget system, HTiB (home theater in a box) is the main option, but the components are not always good quality. With these you also need to make sure the receiver doesn't have proprietary speakers connectors (Onkyo and Yamaha, for example, usually don't use proprietary connectors so those are possible options), which would mean you can't upgrade speakers. Otherwise, if you choose wisely, HTiB is a good start. I can't list a specific price because I don't know your budget or preference, but you could easily spend $200-$500 per component. A HTiB system could cost around $400 and up.
Most enthusiasts recommend buying each component individually for optimal sound but that's more expensive than say a HTiB, hence why that's a good buget option. With that in mind, another option is to buy components overtime. My recommendation would be a 2.1 (left and right speakers, with a sub) and then add a center, followed by surrounds. 5.1 is the current standard, 7.1+ is the future; currently, not much content is natively 7.1 but that may change over time. Setup is pretty easy as there are many guides online. It is probably one of the most important aspects. You can have the best components and still get mediocre sound because of poor speaker placement or lack of calibration.
Good speaker wires are a must. Don't forget to factor in speaker stands and room size/treatment.