Can someone assist me with a reliable Free Site where I can check and gather information regarding my backlinks and how to improve my link building skills?

Selected answers from the Dumb SEO Questions Facebook & G+ community.

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  kumbirai masanganise: Hi Guys , Can someone assist me with a reliable Free Site where I can check and gather information regarding my backlinks and how to improve my link building skills. I need to check what wrong with my current back links and whether or not they are indexed.
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  Tony McCreath: If it's your own website then Google Webmaster Tools has the best free data. Not a great interface though.
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  Rotimi Orimoloye: Screamingfrog seo spider.
  And it gives you wayyyy more info than just your backlinks.
   ;:)
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  Tony McCreath: +Rotimi Orimoloye ;How does Screamingfrog gather backlinks? I know it gathers internal links but you would have to set it to crawl the entire internet to get backlinks.
  
  However,  ;Screamingfrog can be used to verify the backlinks provided by GWT.
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  Rotimi Orimoloye: Ah! I see. My mistake ;+Tony McCreath, I've actually never used it for that purpose before. I beg your pardon +kumbirai masanganise. ;
  But I always noticed the Inlinks and Outlinks tabs at the bottom. Always thought they were for info on links coming into the page and going out.  ;It does make sense that only a web crawler would have that info. ;
  
  But come to think of it, I think I have seen some tool like that once, long ago.
  Perhaps from Moz or something. I'll check. ;
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  kumbirai masanganise: Thanks guys , will have a look at ;Screamingfrog +Rotimi Orimoloye ;
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  Tony McCreath: Other backlink tools are:
  
  Open Site Explorer from Moz (FREE)
  MajesticSEO (Paid)
  ahrefs (Paid)
  Bing Webmaster Tools (FREE)
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  kumbirai masanganise: thanks +Tony McCreath ;