The robots meta tag and the robots.txt file are 2 different mechanisms to pass information to search engines
Once your site is populated with data and pages you should create a sitemap AND submit it to Google / Bing, etc
The page title defines how your page looks in the Google SERP, making this an extremely important SEO parameter
Leverage browser caching is one of the easiest methods to gain a big performance increase for a site
Like, the www or non-www issue, any kind of duplicate content in your site could be a hazard for your search engine rankings
When your website uses many images, it is important that they are optimized and as light as possible
Make sure you create redirects for Google when individual URL's change, or even your entire site
If you are looking for a book to help you get your Joomla website high in the Google rankings, check out my E-book Joomla! 3 SEO & Performance. Attracting many visitors on a fast-loading Joomla website is the main goal we are trying to achieve in this book.
Joomlaseo.com is fully built and written by Simon Kloostra, Joomla SEO Specialist and Webdesigner from the Netherlands. I have also published the Joomla 3 SEO & Performance SEO book. Next to that I also sometimes blog for companies like OStraining, TemplateMonster, SEMrush and others. On the monthly Joomla Community Magazine I have also published a few articles.