Premier elements and YouTube uploads

It normally works.  There is a built in procedure that directly uploads to YouTube.  There are several steps in the process that are hidden so should some internet or YouTube interuption pop up it can be confusing.  

Better and often quicker is a three step process.  You first output a common, universal format video to your computer, review it to ensure you like it and then use the YouTube uploader.  

Both methods work, but the later can sometimes be less frustrating because of unpredictable changes at YouTube.

Nothing in life is 100%. And things involving the internet are even less so.

I'd recommend you download the free trial and test drive it on your system with your internet connection and see if you like the results before you buy.