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On top of creating a content page and organising the projects into various categories, you may want to consider featuring the best few projects in the main page. You would want to impress visitors the first thing upon arriving at the portfolio, and having over 100 project links of various types won't be a good idea. Not to forget, don't overcram the main page with project images. As the saying goes, "less is more". A select few projects images will be enough to attract interested visitors and they would naturally delve deeper into the portfolio through the links and categories.