You don't have to code to use WordPress. There's a whole group of bloggers, many of whom are also writers, who use WordPress, and it's worth tying in with them. We not only write nice things on each other's blogs, but there's the like button as well. It's nice because you can show that you've been to someone else's blog post, even if you didn't have anything intelligent to say. And we promote each other's stuff on Facebook and Twitter as well.
I won't kid you and say there's no learning curve to WordPress, but I'm not real tech-savvy, and I worked through it quickly. Now I usually just sit down and type the post straight onto my blog--no intervening write-up on Word required, a lot like my AW posts. You can type up drafts well in advance and they'll be saved.
If you go to my blog, you'll see I have everything organized into categories with index pages. But that's extra work that I chose to do. Lots of people just make their blog page the default when you go to their site. Add an interesting About Me section, a Books Published section, and you're in business.
If you do start a Wordpress site, I'll recommend you go to my blog for a completely different reason. Look at the people who liked and commented on my posts, and click on their names or icons to visit their blogs. Like and/or comment on their posts, and they'll do the same for you. It's way less depressing than posting for a couple months into a vaccuum and hoping you're not wasting your time.
But others have used other platforms as well. Tumblr seems to be popular. I can't really comment on how they work as promotion tools, though, because I've never used them. I will say I'm annoyed when I visit another platform. I have to sometimes say filler things just to show I reciprocated the visit, and that's an activity I try to avoid.