If you're not tech savy, I suggest getting a pre-built system from Best Buy or Fry's. A mini tower or tower will give you expandibility. I'm tech savy enough that I can build my own system, but I don't want to hassle with it. I just want to take it home and use it. If you get something with an i5 or i7 CPU, you probably wouldn't have to worry about video issues. If the system doesn't come with 8GB RAM, upgrade it so it is. A single hard drive system is sufficient. SSD is too expensive and drive storage isn't great. SSD is actually best utilized in laptops. SSD's are Solid State Drives, which have no moving parts. Regular hard drives have platters with arms.
Prices can vary, depends on what you want. Plus stores usually try to sell you additional stuff, like monitors and printers, which aren't necessary, unless you really need/want one. What's your price range?