NoFollow and robots.txt

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

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  Neeraj Pandey: What if I use nofollow tag on my homepage and block all other URLs with robots.text?will google still index those URLs with description not found text? 
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  Federico Sasso: I could happen, if it can find them through other means (e.g. an external inbound link)
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  Neeraj Pandey: +Federico Sasso​ the website is new and if I want one by one page to show in search I mean no external backlink
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  Suraj Gadage: +Neeraj Pandey ;it may index. Because even if you don't have external backlinks, usually your site will be found by crawlers through domain lookup tools (in my exp). ;