Here are a number of links that I have found helpful — I will be adding to these as time goes on…I will try to keep these organized by category.

Organizations

• American Philatelic Society
• Austrian Philatelic Society (UK)
• Austrian Philatelic Society (US)
• Ukrainian Philatelic and Numismatic Society
• Charlotte Philatelic Society

Postal Services (To Buy Stamps)

• USPS
• Austria Post
• Ukrposhta

Discord Server

• International Philatelic Promoters Discord