PCs are very adaptable but picking one that fits your current needs is a matter of choosing the right combination of components to suit the type of software you intend to run. Identify what you will use your PC for, then find out what combination will match your requirements. If you want to limit your spend, you may well be able to do without some of the more expensive options on offer, for now, and upgrade later. If the jargon is new to you, check terms in the technospeak glossary.
What Do You Want To Do?
When choosing your new PC, you need to decide what you're really going to use it for, there's no point paying for a top of the range, all-singing, all-dancing model, if all you want to do is write the occasional letter.