Hi and welcome to the community... we have pooled a vast about of info about these much loved buses.
Feel free to ask any questions if you can't find the info you're after and join in the chat too.
The front wheel bearing will need to be done on a press... ask you local garage if they can press out the old one and press in the new one for you
Best to get a genuine kit... they're on ebay, as they have the dust seals you'll need. At least one will get damage when pressing out old bearing. Not that bad a job to do...is yours 2 or 4wd ?