For general settings
Go To : Appearance > Customize > Blog

Blog Archive / Posts Page Layout Style

Go To : Appearance > Customize > Blog > Entries & Archives > Main Layout Style

Available options are :
– No Sidebar
– Left Sidebar
– Right Sidebar

Posts Layout Style

Go To : Appearance > Customize > Blog > Entries & Archives > Posts Layout Style

Available options are :
– Default – Content below image
– Thumb to Left
– Grid – 2 columns

Single Post Layout Style

Go To : Appearance > Customize > Blog > Single Post > Single Post Layout

Available options are :
– No Sidebar
– Left Sidebar
– Right Sidebar