I think you need to see T1 before trying on T2, as T2 picks up 20 years after we left the boys in T1, Scottish lads caught up in heroine and petty crime, with the effects two decades later having yet to wear off (if they ever could).   Danny Boyle directs with verve, style and wit — as usual — and Ewan McGregor and Robert Carlyle are great screen presences.  The plot of T2 isn’t that important; it’s all about hanging out with these damaged souls and the story is nicely wrapped up.