How to start Search Engine Optimization?
The first thing to start with is the actual Google's advice how to start understanding SEO. After that, you can search for tutorials and engine optimizations regarding words, banners, traffic, ranks and basically everything that it's connected to this term.
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Start reading lots of posts in various blogs such as Search Engine Journal, Le Geeks , techtage, Marketing land,SearchEngineLand and many more. You'll start learning it.
Once you learn it, implement it and you'll become an SEO expert easily!