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Best Regards

I see you have a solution. Irv.

could you not use - a plugin?
similar to this?
https://en-gb.wordpress.org/plugins/custom-sidebars/
looks interesting!!
have fun
phil

Hello Jeanie
As Ray indicated your theme does not support more than one column. Easiest is to use a theme that supports at least two columns, one for content and one for sidebar in which you can then add a list/s of your posts/pages by using widgets as Kev suggests. You can also list your posts by category.
Cheers
Geoff

Most themes have this option. Go to you WordPress dashboard, click on appearance on the left menu. From there select widgets.
In the windows that opens select the recent post widget in the left side of the window. Drag it to the left side widgets in both posts and pages.
Hope this helps, if you need more help feel free to contact me. Cheers Kev

Hi Jeanie, your theme "Mahal" doesn't seem to support a sidebar. It's a one-column theme. You could experiment with some other themes that give you an option...?