0_Apprentice
I am an avid stamp collector. So Many different collections to choose from. 
1_Wizard
It has been a popular hobby as long as stamps have existed.  I've been collecting since I was 6.
0_Apprentice
Have you ever tried to sell any for profit?!
1_Wizard
Unfortunately all the stamps I have are used so not very valuable past the proof of paymeny cost. 
0_Apprentice
Are there in hard to find ones that you are still looking for to complete a collection?
1_Wizard
I really want the Washington-Franklin issues since it was a huge change by having two silhouettes instead of the traditional singular.
0_Apprentice
How do you go about finding it? 
1_Wizard
If I couldn't find it online I'd probably contact a university philatelist to see if they had any leads on where to find them.
0_Apprentice
Any other tips for stamp collecting you can provide?
1_Wizard
Collect them for the joy, relaxation and calming effects, while not worrying about the minor details or defects.