I am not a techy, so please answer this simply, if possible. I am struggling to add an adsense plug-in to my blog. First, I started with a theme which did not have widgets. I changed my theme to one that does allow widgets, but none of the pre-packaged plug-ins are for advertising. When I try to upload one, (by hitting the install/download button), it gives me the wp-content directory error code. I googled this code and got answers that ranged from re-write the codex (which I don't know how to do) to those that say it is impossible to add a plug-in to a free wordpress account. Many of the answers are so technical that I'm finding it virtually impossible to make sense of them.
Is it impossible to add ads to a free wordpress blog?