Here are links to some of the stuff I do. Any subs/follows/patronage is heavily appreciated! Someday I'll put more stuff on this page.
You can just go to my channel, where all the scheduled streams are visible. They also let you set a reminder for them so you can be notified for a stream you're interested in.
In general, I stream approximately 3 times a week. This can vary from time to time, but that's usually it. Regarding exact time, that varies a lot - so I'd say check the above link for better details. I usually schedule next week's streams on a Sunday.
I upload videos weekly, if I'm not taking a break. I usually upload on Tuesday and Saturday at 17:00CET, but this also varies from time to time.
However, I tend to upload videos early as well, as soon as I upload them. If you're interested in getting to see videos early, become a Patron! Any tier will grant you access to all posts, plus you'll be credited both on this site and at the end of youtube videos.