How to show latest & recent post in blog?

Actually, it is very simple only.
The first step is Go to [Dashboard]->[Layout]

In [Layout] tab, select [Page element], and select [Add a page element]
Under [Add a page element] window, select [Feed]


In configure feed window,type
http://yourblogname.blogspot.com/feeds/posts/full


After that, you will see the widget appear at page element. So you can edit feed by giving appropriate title (Exp: Recent post, Latest post)