Stampcrazed,
Pic 1: Venezuela 1932, sc # 298, low value
Pic 2 : Postal stationary from Canada, leave identification to our Candaian experts

Pic 3: Canada 1897 Jubilee, approx $15 in hinged condition (providing original gum on reverse)
pic 4: Gwalior (Indian convention state) official 1921, sc O28, low cat value but still not to common to see
pic 5: Switzerland.
- Left stamp, cannot see if white(1862) or granite paper (1881) (you must check on reverse) Sc 43 or 61, value $3 or $0,5 respectively
- right stamp 1862, sc 44, low value
pic 6: GB 1867, sc 49. You must check the small numeral on either side of the portrait, Seems to me to be plate number 6 or 8?), if so value cat value $30 for both - if it had been in perfect condition

pic 7: Greece large Hermes, difficult to idnetify on this poor scan, but due to late postmark used probably 1875, sc 43, value $6. However there are lots of printings on these, so must be checked with better image,
last pic - Canda, probably very ordinary stuff.
Good luck in you future hunting!
Jon