Wordpress is a little weird in that, if you have fairly basic needs, it's brilliant. If all you need to do is lay some nice css over the html provided by an existing theme, it's golden. If, on the other hand, you want to fiddle with what goes where, you need to be reasonably conversant in php so you can edit the theme, and if you want to really flex the system and make use of passed variables or, heaven forbid, need something outside the pre-packaged functions... it'll make you tear your hair. And write plug-ins. I'm just giving fair warning.

That said it /is/ my go-to CMS for my website clients, and what I use for my fic archive, and if you want to give it a shot I can probably help some. Thankfully, the documentation is also recovering a bit from the weird wipe-and-rewrite it went through around the 2.4 mark.