Am transferred out of USA and want to take a reliable comp to download and
watch movies, game, and email with a bit of work on the side using word and
excel.

So, do I buy a Dell/Gateway/ etc or, following the advice I culled from
weeks of lurking, buy stuff from newegg and assemble at home, thereby saving
tons of scarce cash.

I am not an experienced builder, but have been swapping out parts for years.

Your thoughts please?