Creating panoramas with MGI Photovista is pretty straightforward, and the online help is adequate.
Photovista also lets you create a 360 panorama viewable through a steerable window. For some purposes this is preferred to the wide view of the whole panorama.
These are pretty easy to make, but the online documentation is pretty sketchy. Here is the procedure for making a steerable panorama.
Photovista gives you several alternatives of viewing software. For web purposes, I highly recommend choosing the Java viewer, as this means that visitors do NOT need to download and install any special plug-in software for their browser.
You don't need to know Java to use the Java option. MGI Photovista will do the work for you.