That said, when you’re ready to start playing with the SEO plugins, here are a few that I like:
Yoast SEO is by far the most popular right now. Yoast not only helps you display your title tags and keywords, it also analogizes your content to make sure you are doing the things you need to be doing. If you’re missing say alt tags from your images, Yoast will tell you.
All in one SEO Pack
All in one SEO: This is the granddaddy of WP SEO Plugins. I used it on many sites back in the day but I’ve been using Yoast exclusively for the last few years. Anyway, I took another look at the plugin today (as the still are a real player in the industry). They have added quite a few features since the last time I used them. I didn’t have time to do it today but I will check the plugin out in the new future to see what the offer.
One more thing to consider is your site speed. While technically not an SEO plugin, a good cache plugin (like W3 Total Cache) is also important to have. Most SEO’s say that Google is now using site speed as a ranking factor so a fast loading site can only help you with your SEO efforts.