PDFs are critical to businesses and just as important to many individuals, yet big-box PDF programs are often priced beyond reach. Fortunately, most of what you need to do with PDFs can be done just as well by individual applications, many of them freeware. For example, there's SkySof's PDF Bookmarks. It can create, edit, and delete bookmarks in PDF files. Its wizard-based operation is simple enough for the most tech-averse user. And, yes, it's free.
While there are many advantages to all-in-one PDF programs, price is rarely one of them. We're happy to use separate tools for each PDF function (such as bookmarks) if it saves the cost of the average big-box program. But the fact is, simple tools like PDF Bookmarks are often much easier to use than the large programs. There's less to learn, and things are easier to find than in an application so loaded up with features that it requires training sessions. Fire up PDF Bookmarks, fix the document, and get back to your day job.