If you are a beginner and read books to learn, I think it's better to choose one which is written in English and Japanese.
It is more understandable because you can compare Japanese sentences with English one.
I'll introduce something I found :)
http://www.hiraganatimes.com/hp/magazine/about/multi-level-E.html
http://www.hiraganatimes.com/hp/magazine/thismonth/thismonth-E.html
I think this website(HiraganaTimes) itself will be any of help.
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Hope this will help ;)