I often get questions from affiliates that would like to build some websites to promote our resume and employment services but have no ideas about what their websites should be about.
One of the things I can tell you from experience is that our most successful affiliate sites are usually sites that are specialized in one industry or job field such as finance, hospitality, health care, military, etc ... These sites only attract professionals from the field they're specialized in and offer an employment section on their site.
With that in mind, the easiest and most effective way to start a website, if you do not already have something in mind, is simply to build a website around your work or field. If you spent most of your career in the same type of job or field, you are most likely an expert at what you're doing. Not only will you be able to create a great site full of useful information but it will be easy for you to create content for it since you already master the subject. Once you have all your pages set up, all you need to do is promote our services on these for people looking to get employment in your field. You can also create an employment section on your site, which works even better.
As to building the site, you have two options: you can find online a hosting/easy web building package with your own url for around $60 or you can use a free blog.