News of SEO Principles

Hello sorry for this question, but I see some mods about seo for phpbb 3. Now what have I to install?
I would search engine friendly url, included name of forum, of sub forum and of post.
And I would have RSS near any forum and subforum.
And I would sitemap.

But now the question is: for all that I would, what mods I have to install?
thanks a lot in advance, also for the patience.
My "start" forum
forum.giocattolissimi.it

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