WvW build for beginner Mesmer
Maybe Scepter/Torch – Staff, 20/20/30/0/0, PU, conditions. Dire/Rabid mix gear.
Heavy on defense and boons, makes mistakes less punishing and lets him get in/out of fights easier.
Reasonably simple to play. Just spam conditions, block big hits with scepter and stay hidden as much as possible.
It won’t net as many kills and has very little chase/kill potential, but he will have a better chance to learn how to use his class effectively because he won’t die as much.
A PU condition build is probably the easiest for roaming and getting to know the very basic mechanics.
After a while I would recommend watching some videos of Vashury for example, shatter is much more fun in WvW (and the most fun of any mesmer style imo).