If you are curious as to how I keep up my online presence, then check out this page on my site: My Blogging Tools. I quickly explain my methodology and then list out all of my hardware, websites and software that I use to update not only this site but all of my social networking accounts.
It's really easy to create your own website. You can use tools like WordPress or SquareSpace that are totally web based; or you can use tools like Rapidweaver for the Mac that allow you to edit your website locally on your Mac and then upload to your personal domain. You don't even have to have a personal domain. You can use tools like WordPress.com or Blogger.com and have a totally free and very personal web presence that's easy to maintain.
You don't need powerful hardware. You can use your personal computer (Mac or PC). You can use your smartphone (Android or iOS). My preference is for Apple products, but you don't have to go down that road. Getting started is very easy and really quick. All you need is a little imagination and a bit of desire. In less than 30 minutes you too could have your very own website!
If you have any questions, please drop me a line. I would be happy to give you some pointers.