EDI has been around since the mid 1950s but most companies only started really adopting it in the late 80s and early 90s. It's always a good chuckle when someone says to me, "EDI, isn't that a legacy technology?" My answer is always the same, "sure maybe, but it's so ingrained in so many of our business systems that legacy or not, it's here to stay."
I remember when I first started doing EDI back in the late 90s, oh the mistakes I made. I would have given anything to have the blogs, forums, and resources that are available now. Over the years there are definitely a few good sites and products that stand out above the rest. Here are some links to some of my favorites:
Stylus Studios EDI-L Blog - great resource for topics related to EDI, EDIFACT, and X12. Topics include EDI software, standards, applications, examples, and more.
EDI Notepad Editor by Liaison - life saver! Sure your EDI translator will tell you some of things this editor will tell you but the various formats, errors outputs and displays that this editor will give you are invaluable and the download is FREE!
ASCII Codes - They're everywhere in EDI, right? I know I've needed to look them up more then a few times. This is a great list.
The Dreaded 856 HL Loop - I know I hate them and I also know I'm not the only one. While this link doesn't cover palletized or multi-tare 856 looping structures, it does best explain the "basics" of 856 looping.
1EDISource for Resources - these guys have been my "go to guys" for the last 12 years or so now. I've been in the EDI industry for almost 20 years and I've worked with many EDI providers and solutions but these guys are best of breed in my opinion. Check them out!
These are just a few of my favorite "Go To" resources when I'm stuck but a good old fashioned Google search will usually produce a ton of useful results nowadays. Happy EDI-ing!