They're good if you're quite techie, or if you're not at all techie, it's only if you're somewhere inbetween and only understand brand name windows products like excel say, that you might struggle.
Paul Clarke's blog - I live in A small town, Kent. Wed to Clare + father to two, I'm a full-stack web engineer, + I do js / nodejs, some ruby, other languages ect ect. I like pubs, running, eating, home automation and other diy stuff, history, family tree stuff, Television, squirrels, pirates, lego, + TIME TRAVEL.