Digital BW, The Print

Hi:

We're just starting out. We have little Photoshop experience,
if any. What we do have is Photoshop version 5.0.

My specific question to the group is: Should we IMMEDIATELY
upgrade to Photoshop version 6.0?

I know the price of the upgrade is only $160 or so, but 
can we learn with verion 5.0 and put the $160 towards inks, papers,
etc?

If you do say that we should upgrade a reason would be really
helpful for us. For example:

"Version 6 has Feature Y that will literally save you thousands
of hours of having to use Feature X in Version 5.0"

or

"Most of the methods, workflows will have to be adapted to
version 5.0 and you'll end up wasting lots of time/ink/paper"


Thanks.