You can watch the final tables of WCOOPs and SCOOP mixed game events, hole cards up. A lot of these should be on Youtube. Or there might still be some in the Stars client from last WCOOP? Find out who is a good player and watch what they are doing...
You can also watch the final tables of WSOP events hole cards up. This year they finally had a good way of displaying the cards in Stud games, so you could can the action really well. The final table of the 10k Stud8 was excellent and there are a few more. Also on youtube.
Occasionally you get someone streaming mixed games on Twitch. There is a particular session I recall with Jason Sommerville and Daniel N. I think the HORSE WCOOP which he won or chopped where they go through the final table together if you can stomach Daniel talking for several hours! Also on youtube and in Jason's Twitch archive.
The good thing about old Mixed game vids is that they don't date nearly as much as NLH vids. So old DC ones are still relevant and solid.
Last couple of years have been very good for this, especially events commentated on by Nick Schulman. Def worth watching the full 6/7 hours. Tom Chambers (ultra heavy theory based) and Ceegee (in game content) have started doing good mix game content on Runitonce. Maybe dm someone who might be able to share their account if you don't want to pay yourself.