I'm very new to this so please be gentle and apologies if i've missed this elsewhere on the Forum. Following the recent demise of my TV, I'm taking the opportunity to review / upgrade my home entertainment set-up. To date, I've found the forums fascinating, and an excellent information source. However I'm a little stuck regarding speakers. Therefore can anyone point me at an 'idiot's guide' to speakers, where, for example, I can: understand the terminology (e.g. what's the difference between 4 and 8 ohmn?) provide some simple guides / indications as to what to look out for? explain the pros / cons etc of, for example, large v small speakers. Many thanks for any help.