If you are brand new to the hobby, expert guides like those from Dummies.com and veteran authors like Forrest Mims recommend these steps:
Act like tiny temporary batteries that store and release energy. Electronics For Dummies
Always work with low-voltage batteries (like AA or 9V) while learning to keep things safe and fun. Electronics For Dummies: Shamieh, Cathleen, McComb, Gordon If you are brand new to the hobby,
The amount of work being done (measured in Watts). Meet the Components Electronics For Dummies
Complete mini-circuits packed into a single small chip (like the famous 555 timer ). How to Start Without Getting Zapped
One-way streets that allow electricity to flow in only one direction (LEDs are a famous type that light up!).