Adam Christianson’s appearance at a California group highlights this week’s MUG event Calendar, followed by a discussion of Photoshop on the iPhone at a Florida group, and a discussion of Apple’s Keynote presentation program at a New York group.

Thanks to all the groups who regularly send in their meeting announcements. If you would like to see yours in our weekly Briefing, put a note on your schedule for the first of the month and email the details to The MUG Center.

The week’s complete listings include:

Monday April 21

Silicon Valley Macintosh Users Group – Adam Christanson

Tuesday April 22

Wednesday April 23

Naples MacFriends – Photoshop on the iPhone!

MacNexus – TBA

Thursday April 24

Upstate Apple Users Group – Keynote

Friday April 25

Northeast Ohio Apple Corps – TBA

Saturday April 26

Sunday April 27

Double-Click – TBA