For the ‘Recent Posts’,’Categories’ and ‘Meta’ , they are all widgets set in that sidebar. Please go to your Appearance > Widgets, find the sidebar and remove them. Leave only the ‘Search’ widget.
For the ‘Like’ sign (the heart), please go to Specular > Blog Config and set off the ‘Active Post Like’, ‘Show author at blog post’ and ‘Show date at blog post’. Also add this code into your custom css box, for the Comment part: #comments { display: none; }
