[@netweb Keymaster 12 years, 6 months ago]

What you would want to do is create a page using the [bbp-forum-index] shortcode and then after that shortcode simply add the shortcode [bbp-topic-form]

Check out the docs in the codex for how to start doing this:

Codex

Check out the bbPress conditional tags https://codex.bbpress.org/bbpress-conditional-tags/