No offense intended, but you're asking for a lot. Circuit design isn't simple; that's why electrical engineering programs exist (It takes years to learn all the material needed to design circuitry.) I see from your profile that you're still in school, and not even to the high school level yet, which likely means that you lack the knowledge of mathematics and physics required to understand many electrical engineering topics.
The best advice I can give you is to be patient and start very small. You have several blocks in your diagrams labelled "low-pass filter"; designing one of these is an excellent place for you to start, as very simple LPFs can be made using only two passive components. Once you've designed each block in your diagrams, you can start thinking about how to combine them.
