[sushidushi]

I am just beginning to try to learn some Japanese. I have looked at various books, some of which suggest that the 'g' in Japanese is always pronounced like the hard 'g' in the English word 'egg', but others seem to contradict that and say that, in the middle of words (as in, well, tamago) it is more like 'ng' in the English word 'long'.

Is it a regional thing, perhaps? Or does it depend on where in a word the 'g' appears? Or, perhaps, as I suspect, rather more complicated than either of those...?