What is the difference between bearing$-$type and slip critical bolted connections? $($reading$)$

What is the difference between bolts designated as A$325-$N and A$325-$X$?($reading$)$

Minimally, how far from the sheared edge of a steel piece should the center of a hole for a $1"$ bolt be$?($reading$)$

What are the six typical structural connection types? $($reading$)$

What is the purpose of a "cope"? $($reading$)$

What is the most common component of structural steel framing systems? $($reading$)$