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 ##Basic concepts  
 
+A good starting point for newcomers in the electronics field looking for what is they must to learn is the flowchart depicted in the image below:  
+
 ![general](imgs-filippos/1.JPG)
 
   ### Current 
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 ###Outline.
 
 - [Basic Concepts.](basic_concepts/index.html)
+	- Current, Voltage, Resistance
+	- Wire Gauges
+	- Circuits  & Circuit Analysis
+	- Resistors
+	- Switches
+	- Diodes
+	- Capacitors
+	- Transistors
 
 - [Inductors and motor driving.](inductors_motors/index.html)