Hello cnirbhay, and Welcome
To add to r-frank's suggestions:
For FEM, due to the incredible development pace, you should probably try out the 0.17 development release for your platform (looks like Win from the screenshots on your blog?) There are new features/bug fixes almost daily
As r-frank has pointed out, for FEM, the best source of documentation is to follow the FEM sub-forum. As a very special case to normal FreeCAD practice, posting help requests to the FEM development sub-forum is encouraged (For FEM specific problems of course). What is help or usage or a bug or an opportunity to improve is very much in flux. There is a small group of FEM developers that are AWESOME! They are very receptive to users concerns and very willing to help. A recent post in the sub forum points to this in-process training http://opensim.co.za/index.php?option=c ... Itemid=618
BTW: Very nice graphics on your blog.