MyBB Community Forums

I would like to post adsense and some other type of ads on my forum do you guys have a good plugin to use

you can use My Advertisements plugin

see also few search results on youtube

The other way is get the HTML code from Adsense (if that's what you are using) and find the template you want it to appear in. Usually, ads go in the index page, so you would go to ACP>Themes and Templates>Templates>YOUR TEMPLATE>Index Page Templates>index and you can then paste the HTML in the place you want it to appear.

The plugin makes it simpler, but I prefer not to clutter my inc/plugins folder whenever possible.