this is my tutorial how you should start with a new microcontroller project.
Step 1: Your Best Friends
The first thing you have to order are a perfboard and jumper wires.
Step 2: Choose Your Microcontroller
You don't have to choose one of these three. They are only examples.
Step 3: Components
Chose the components that you need. Finde out how the components work together and which port have to be connected with the microcontroller at which place. Components could be a sensor or a motor, anything you attach to the microcontroller.
Step 4: Connect the Components
Connect the components and the microcontroller you chose before with a perfboard and some jumper wires.
Step 5: Program
Now you can test your code and how your microcontroller works. If your code works you will solder the parts to a perfboard or will design a gerber file and solder the parts to it.
Step 6: Conclusion
Follow the instruction for your next project. Let me know in the comments what you think or if you have any questions? Thank you for reading.