Of course you can. The Village Calendar on the Home Page always includes notices of upcoming events. Sometimes these are accompanied by 'advertisement' banners on the website.
If you have an event, activity or group to publicise, please use the contact form (Menu item: Help > Contact > Email Editor) to let us know. Cocking.org will do its best to help all 'good causes', especially those with a local angle. The site does not normally publicise commercial events and does not involve itself in any form of politics.