diff --git a/README.md b/README.md
index 19b303a..7f0a7b0 100644
--- a/README.md
+++ b/README.md
@@ -36,8 +36,6 @@ Let's apply it to 5 concepts to understand electricity:
 * Voltage
 * Intensity
 * Resistance
-* Inductance
-* Capacity
 
 
 **Tension** It is the difference in height that exists between the two highest and lowest points for a waterfall. The water will flow in that direction. This notion is clearer when it is called Potential Difference (DDP). Electrons only circulate if there is DDP. It takes a high potential (the + of the battery) and a low potential (the - of the battery) for electricity to flow. We measure in Volts.
@@ -46,8 +44,10 @@ Let's apply it to 5 concepts to understand electricity:
 
 **Intensity** This is the amount of water that will flow in a given time. For example, one liter per second. The stronger the PDD and the lower the resistance, the higher the intensity will be. We measure in Amps.
 
+**Inductance and  Capacity** are interesting but require more knowledge. 
 
-### 1. Symbols
+
+### 1. What are all these symbols? 
 
 There are plenty of components that all have a symbol, and some even have multiple symbols depending on the cultures and specifics of the component.
 
@@ -57,7 +57,7 @@ ex: the lamp
 
 ---
 
-### 2. Simple circuits
+### 2. Simple circuits: How do I build something minimal?
 
 **Theoretical**: The current, the direction of the current  
 **Components**: DC power supply, Resistor, Switch, LED  
@@ -70,7 +70,7 @@ ex: the lamp
 
 **Application**: a humidity detector
 
-### 3. Parallel / series circuits
+### 3. Parallel / series circuits: What happens if I plug this after this one?
 **Theoretical**: Make circuits with branches  
 **Law**: Addition of resistances  
 **Components**: DC power supply, Resistor, Switch, LED, Relay
@@ -82,9 +82,22 @@ R = R1.R1 / (R1 + R2)
 
 Relay to drive a 220V socket
 
-### 4. Potentiometers + thermostat with ampliop in comparator / open loop mode
 
-### 5. Capacitors + twilight watering in all or nothing mode
+### 4. Potentiometers: How can I change the intensity gradually? 
+**Theoretical**: ?
+**Law**: ?
+**Components**: DC power supply, Resistor, LED, Potentiometer, Thermostat, Ampliop
+
+
+thermostat with ampliop in comparator / open loop mode
+
+
+### 5. Capacitors: How can I delay a poweroff?
+**Theoretical**: ?
+**Law**: ?
+**Components**: DC power supply, Resistor, ...
+
+twilight watering in all or nothing mode
 
 # Useful links