how can i go about it
What exactly do you want to do?
Have you thought about the content it will have?
You can either choose a design or you can buy a template from themeforest. Or you can create your own design or you can hire a designer…
There are many ways to accomplish the same thing, you just need to know exactly what you want to do.
if you have time and skill it is always better to create from scratch web site. Because you will know where all post, image, plugins are located and you can pick up the platform of your choice easy update your site. if you do not have time hire the experienced person.