Digital BW, The Print

Hi,
I am a member of the piezography group and have posted on here very
occasionally but do have to thank you all for the amount I've learnt  over
the years from reading your posts.  (the ones that are not over my head).
As I  now finally have high speed internet I am having a web-site created
And need to prepare images for it. I am hoping that some-one could give me
some guidelines on the best way to do this.  (MAC G4/ O.S 10.3.9/Photoshop
CS).  I know PS has the "Save for the web option"  but within that there are
various options which I am a little unsure of.   Thanks a lot.  Siobhan