Re: Setting up registration with buddypress and s2member
There is actually a rather easy way to accomplish what you want done.with s2member.
New users are redirected to the homepage upon activation of their account. Using s2member’s API/Scripting, it’s quite simple to set up a page to display different content to not-logged-in visitors and logged-in members whose subscription level=0 (free membership).
1 – Create a page and assign it to ‘Front page displays’ under ‘Settings’ > ‘Reading’. That’s your new homepage.
2 – Under ‘s2member’ > ‘API/Scripting’, go to ‘Using Simple Conditionals’ and study the example codes given. You can customize the content on your frontpage to display the PayPal buttons ONLY to registered members with a level=0. You can also set it up for incremental upgrade prompts according to the current membership level (s2member is really cool in that regard!).
3 – Under ‘s2member’ > ‘General Options > ‘Login Welcome Page’, you can redirect users to their BP profile when they login with this: http://YOUR-SITE.com/members/%%current_user_login%%/profile/
Now create your register page the way you want it, and have your users sign up in the usual way. (Perhaps include some info on that page informing them that will have the opportunity to select their membership options after activating their account.) They will be redirected to your frontpage upon activation and will then see your PayPal subscription button(s) displayed prominently, all the goodies that come with paid membership, and a hearty prompt to “pay their dues”.
Hope this helps! 
