IF your question is about pull-ups, relays, switches or the power supply...

IF your question is about pull-ups, relays, switches or the power supply to make things work... You may be more suited to programming and problem solving / analysis

Your fastest path to enlightenment is to find an ARDUINO-BUDDY that excels in electronics/hardware, and learns from you with the software. This will work well for both of you - helping each other understand very important fundamentals & principles of 'system' development.

Your solutions will be neater, more reliable and you'll be proud to show them off - and you'll actually understand how they work!