Hi,
I've had similar issue for the past several months. I was tasked with research of Creo Illustrate viability for our corporate environment. I started with the ptc university, which is limited to a few short videos, most of which are stuck in 5.0 version as far as I remember.
I went to a PTC retailer training, but in all honesty after first couple of weeks of on and off learning on my own I knew 95% of what they presented and a decent chunk more. Their knowledgebase is basically the software help center and materials provided by PTC, which are the same as in the online university. (I think all of them get the same resources from PTC directly, may be wrong though)
I've spent a lot of time going through all of the help center articles, some online guides (not many though as they all present pretty much the same - basic - stuff), once in a while asking questions on this forum, but mostly just doing stuff on live models and having a goal of creating a set of instructions using this software. I succeeded so far and I am pretty confident I know nearly 100% of the software, knowing of just one exception I'm not currently interested in + I know a few more things that the software in itself doesnt allow, but it's built on plain text files so I learned how to modify those pretty efficiently.
There doesn't seem to be a good set of guides. Based on my experience I discourage you from trying to find the help from basic training sessions provided by retailers - they are REALLY basic, I mean the "draw a line and a circle" in AutoCAD level basic. Give a person in your organisation that is naturally curious and somewhat skillful when it comes to computers and CAD time and resources so they can learn ins and outs of the software and then they can propagate the knowledge and be the go-to person concerning issues with the software. I started teaching others at my company last week. 9-10h of 1 on 1 training covers all of the needed tools and they can work on their own now. Granted, they heavily base what they do on my final work, but it's just the beginning. Gonna check upon their progress the following week. Now I do similar stuff with MPMLink, since the work so for was done locally.
Wish you all the best. The software in itself is easy to use. It's just the fact that it's pretty limited in its options and there are bugs present that it takes a fair bit of research to come up with what and how can be done using it. A hint at the end - if it doesn't come to your mind quickly whether something is available in Creo Illustrate as a tool, then it probably isn't...Think of having different fonts for callouts. You'd think it's a copy-paste nobrainer for someone who programmed it, but nope - Arial is all we get. Works neatly so far, I just hope I'll be able to make it work decent with structure/assembly updates to come when I get it to work with MPMLink...wish me luck.
