I am a Junior member as well, just started preparing for current Affairs. A CSS aspirant have to go through so many books related all the subjects therefore it is important for him to be effective and efficient. Keeping in mind this, I would suggest you;

Dawn daily (1st, back, international, World in forcus and editorial page)
World Times (monthly by Jahangeer Book Press)
Contemporary Affairs (Bi-monthly bi Imtiaz Shahid)

If you go through these resources I am sure you will not miss any important topic. keep in mind while reading newspaper, read only relevent editorial it saves time.

(More comments from seniors)