1. I want to put up a page with a selection of photos, preferably of different sizes (aspect ratios), selectable by categories. Your tutorial shows how to do that but all images seem to forced to be 800/600 ratio.
2. Is there an advantage to using the Nextgen plugin? This seems to be for creating and using Galleries rather than Portfolios (what’s the difference?). Couldn’t see how to associate a Gallery with a Page.
3. Is there a help system (Codex?) that clearly defines these terms and shows how they relate to each other?