Could you be a little more specific? I'll be doing a part-time masters from September and aim to throw absolutely everything at it. It'll be the most imporant academic qualification I'll have.
Well a BSc is normally 120 credits per year, a MSc is 180 credits, so immediately double the work per year (though there are less holidays, so it is more spread out). As its a higher level qualification, the quality expected is higher, and the material is generally harder.
Thats the gist of it really