Get all related sister (same content type) nodes through a view in Drupal 7
To filter nodes with the same taxonomy term, when a node is displayed as main content (/node/???)

View , Display as block

2 contextual filters:


Content: nid -> provide default value: content id from url - more: exclude
Content: Has taxonomy term ID -> provide default value: taxonomy term id from url


It is important to put the contextual filters in this order, the first filter excludes the actual node from display, the exclude-checkbox is at the end under "More"

add additional filters, for example:


Content: your content-type
Content: Published (Yes)


Put the view block right below your Main page content in the Content-Region