Here’s a good article for some best practices for SEO in 2013. Some topics covered include: why it’s good to mix up the anchor text for links so that not every single one matches a keyword you’re trying to rank for. Remember that Google’s algorithm dislikes anything that looks too artificial and that any link-building strategies should be done over time so that they look as natural as possible. It also talks about how Google will increasingly use authorship data and Google+1’s as “ranking signals”, and the role of landing pages in SEO (which is also useful from a conversion point of view!).