Installation is very simple and straightforward - same as for every good WordPress plugin. If you are not sure how to do it, John Godley wrote a really nice article about it - How to install a WordPress plugin.
After uploading the plugin files, or using the WordPress uploader you just need to activate the plugin and that's it. You will be prompted to review the options screen by a warning at the top of the WordPress administration panels, but all the options are preset for the maximum performance with minimum danger. There are no trendy meta noindex options selected here which could get your weblog inadvertently penalised in six months.
Here's the basic interface:
FV All in One SEO Pack simple and clean interface: all the advanced options are ready and waiting
for those who wish to tinker. For those who are busy writing their next post, they only need type in their
metadescription and long page title in the posting interface. FV defaults are intelligent and safe.