I can't help but agree with ragdall and others that you are creating yourself a lot of work by competely re-designing the site.

A quick look at the site suggests that the simple bits that need updating are the Calendar and Workshop pages - and it would be very easy to do that using notepad. I uploaded a page to here which would take about two minutes to change and update and would integrate into the rest of the pages easily. Anyone who can type and who has access to your web site could do it in literally minutes. No fancy tools needed and precious little skill - notepad is more than adequate.

The harder bit to do would be the PayPal and shopping cart bit and there you need some help from your previous web person as to how that is administered.