Your books and portfolios’ need a place – a wall mounted, a.k.a floating book shelf, takes up the least amount of space. Personally, I am not a very big fan of armless chairs for a home office as you see below, but love the floating shelves. You need super comfortable chairs that are ergonomically suited for you. These examples are from cb2.
Floor book shelves also come in a wide range, see a few examples below from westelm and home decorators.