Feel free to pick and choose which circuits to build but I would recommend that you build the Astable Circuit first as I have provided a step-by-step guide which will allow you to build the circuit carefully…….. You may also wish to research using circuit simulation software (many web based circuit simulation apps exist). These will help you to test circuits before you build them and may also give you chance to build and test circuits if you are short of any components. When you become proficient at building circuits using breadboard you should only then need to look at the circuit diagrams and build directly from them. I have provided example photographs of completed breadboards as a bit of extra help. You can choose whether or not to look at them! You can then search for circuits of your own and build whatever you wish…..