There are a lot of available resource in addition to MPUG. Not knowing where you’re located….
There is a site called Lynda.com that offers WBTs for a myriad of topics, including MS Project. I believe they charge a membership fee. However, in the city where I live, I can access this site via the county library for free. All I need is a library card. You may want to check this out in your area.
Additionally, this site is also available via LinkedIn.com. Depending on your LinkedIn membership level, it may also be free through there as well.
On the Lynda.Com site, there are a few MS Project fundamentals courses. I think they average about 5-7 hours each.
I have developed a series of 3 courses which cover all of the techniques needed to reach certification level MCP for Project.
I am looking for beta testers who would commit to review and provide feedback in return for free access. If you are interested please let me know. I’ve researched the market extensively and while there are some good courses out there, none cover the requirements for certification apart from one by Prodigy Learning at a cost of €1700.