What you mean when you said two sites? Are they forums or just blogs/ sites? The reason is you used the word "Members" in the post, so it made me think that you were talking about forums or did you mean "Visitors" (traffic) when you said "members"?

Learn SEO by reading and asking questions on various SEO forums and implement what you learned on your sites, note down the results and carry on with strategies which fetch you good results.