You probably noticed a new look here. I just did a WordPress upgrade, and switched to the new standard theme Twenty Fifteen. Not sure I’ll stick with it (for one thing, it’s not clear how to get the column structure I want) but I’ll play with it for a while.
[Update a while later]
Well, it looks like you can have as many columns as you like, as long as it’s not more than two. Only one sidebar. Not sure whether to stick with this.
[Update a few more minutes later]
OK, looks like the only way to get multiple sidebars is to create a child theme with them. Not sure how much time I want to invest in writing PHP.
[Update a few minutes later]
Last time I tried TwentyFourteen, it was kind of a disaster, but I just got the latest version, and am trying that now. I’ll have to tinker with it, but it at least gives me two customizable sidebars. Definitely have to resize sidebars, and play with style sheet. Feedback appreciated.