I go at least once a year to either the spring or autumn event, and will hopefully be going in November. I'm travelling from Birmingham though.
You need to go to York train station, and from there take the Coastliner bus into Whitby. The bus journey is over 2 hours but the scenery is nice. An open return bus ticket is about £15 ish if I recall correctly.
It's quite nice actually, just a big busfull of goffs and old people juddering along the moors.
You can go onto the Whitby goth weekend site for info on good hotels and B&B's. There is a facebook page also. I usually stay at the Riviera Guesthouse, it's nice, the prices aren't too bad, and it's literally staggering distance from the Spa where the main band events are held. The west cliff is a good choice if you don't want to have to walk far after having a skinfull !!!
There is a meetup on the Thursday? I think it is, for Whitby virgins, telling you the best places to hang out and drink and so on. It's a small town but with loads of twisty little streets, and getting lost is actually enjoyable.
There's the abbey to visit of course, and if you have any large and extravagant victorian looking outfits you will more than likely get constant requests of a picture, from the photographers who invariably invade Whitby to take photos of goths in all their varied attire.
Bothams Tea rooms is great, as is Sherlocks. Lots of little antique shops and so on to visit, loads of old fashioned sweet shops, there are of course some permanent goth shops there, as well as the stalls held in the various locations around the town. The main one is in the spa downstairs.
The weekend brings a lot of income to the town and guesthouses, so the locals are for the most part friendly, and I've always had a good time and ended up talking to random people all weekend when I go ( I go alone , don't know any goths here as there are none )
A couple of people on here have been, but I think I'm perhaps the only regular poster who attends..well regularly.
Hope you enjoy it, I always do