Artonn:
Thank you very much for your explanation, it makes sense! I'll see if I have any 100 ohm resistors. Do you know what the difference between the 220E 220R and 220K resistors are?
The K in 220K means 1000. The resistance should be 220000 Ohms plus or minus the tolerance %. Resistors commonly come in different precisions, 10%, 5%, 2% and 1% with color bands to show which. Look up the resistor color code if you ever need to look at a resistor and know what it should be. Use a meter to check the actual resistance if you need that.
220R is 220 Ohms, 220R-esistance.
The more you see these terms and think/read on them, the more the whole subject becomes clear. Study till you begin to lose focus then rest Repeat as necessary, your brain grows connections you need when you rest, the process of learning has a physical component: your wetware.