How to determine suffix etc

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Hey guys, new here! Just needing some help. I have obtained some 1937 Canadian bills. I have no idea what the suffix is on these old bills. I am trying to determine value. I just don't get the whole suffix thing. I will try to upload an image to show you. Thanks in advance for you help!!

No picture appeared on our end. Try uploading it to http://imgur.com and then posting the link here.

The 1937 series of banknotes do not have anything that would be considered a "suffix".

They do however have a "prefix". This would be the two stacked letters preceding the seven-digit serial number.

This is the first series to use unique serial numbers for each note instead of sheet numbers with individual check letters per note.

Thus, the two-letter prefix combined with the seven-digit serial number will uniquely identify any 1937-series banknote.

Hope this image works!

https://ibb.co/mKhqWR

Yeah prefix! Sound like a newbie for sure 
Just need to know how to figure out what some bills are worth.

https://ibb.co/cd8VWR

J/E is a common prefix (typical 10,000,000 run) for Coyne/Towers 1937 $20. 

It is the signature & condition of 1937 series that determine your note's value (more than the prefix).  I believe the change-overs are H/E and LE but you'd be better off with a Gordon/Towers H/E and even laughing all the way to the bank with an Osborne/Towers note (any prefix) of higher condition (original VF+ to UNC). 

The only prefix i can think of that is highly sought by many long-time collectors for 1937 series would be the $10 Z/D Gordon/Towers note which is very hard to find (and is collected in almost any condition).

Your note looks to be Fine to Very Fine (F - VF) so that would not fetch more than $30.00 - $40.00 according to the Charlton catalogue.