I was talking to @TBenV and he said he still has seats available in his Learn Breadboarding By Building A Joule Thief (electronic circuit) class Sunday afternoon.
https://calendar.dallasmakerspace.org/events/view/7338
Ben conducts this course featuring the classic Joule Thief circuit occasionally. Even if you are not into electronics, come on out and support our own 17 year old DMS teacher!