THE FIRST THING YOU NEED WHEN YOU COLLECT STAMPS AND/OR COVERS: LITERATURE!!!
GERMAN PROVERB: KNOWLEDGE IS POWER! POWER IS MONEY!
THROUGH YOUR KNOWLEDGES YOU CAN: BETTER FIND!! AND BUY CHEAPER!! GEM'S AND IF YOU SELL ONE DAY YOUR COLLECTION - YOU WILL REACH BETTER PRICES AS SOMEBODY WHICH KNOWLEDGE IS MODEST!

READING HANDBOOKS AND CATALOGUES: ONE STAMP OR COVER CAN BRING BACK THE MONEY YOU SPENDED FOR THE LITERATURE!! OR CAN BRING BACK EVEN MUCH MORE!!!!

AND OF COURSE THE MOST IMPORTANT: THE MORE YOU KNOW HOW BEAUTIFUL YOUR HOBBY!!!

BEGINNERS: YOU DON'T NEED ALWAYS TO HAVE THE NEWEST EDITIONS OF SPECIAL CATALOGUES - ELDER ONES ARE MUCH CHEAPER (AND ALSO SHOW WHICH ISSUES ARE EXPENSIVE OR NOT!!!) AND HAVE SOMETIMES INFORMATION WHICH YOU DON'T FIND IN THE NEWER ONES (Because they become to thick and heavy)

INDIA. Field Post Offices in Indo-China. International Control Commission 1954-1968 (Cambodia, Laos and Vietnam). 1968, Embassy Press Delhi, Brochure 8 pages includes also avaiable details of Indian Overprinted Stamps used at Field Post Offices. PDF-File.

Indian Fieldpost FDCs  in Indo-China. International Control Commission 1954-1968 (Cambodia, Laos and Vietnam) - 14 different, PDF-File.