Oh, there are SO VERY MANY web sites with tons of information and entertainment out there. Here's one...
One of my very favorite web sites/blogs is John Ericson's Horn Matters. I have a series of articles on the web site about maintenance and repair, but there is much, much, much more. Almost all of it is horn-centric, but don't let that dissuade you from looking if you play another brass instrument.
Of particular note is John's recent video podcasts on his YouTube channel. There are two interviews of Dr. Rose French, so far, and I can highly recommend her second interview. It's not long, but it has excellent advice about starter and sustaining a performing arts ensemble. All should listen to what Dr. French has to say.
Dave and Chris are brass technicians who enjoy helping players get the most out of their playing experience.