Hi. You'll have to excuse my ignorance here. I'm building my first PC. I've bought an Xigmatek Asguard III case, which looks okay for the price. But the manual is worse than useless. One tiny pamphlet with pathetic b/w pics which are supposed to provide instructions. For example, for installing the PSU it just shows a screwdriver being held up to the rear of the case. Excellent!
Anyway, I just want to clarify what each part is for. Please see my pic below.
The copper stand offs I know are for the motherboard. I assume I use the 8 hexagon screws (3 in the pic) are to secure those? (if so why not the same quantity of each?)
The 4 hexagon screws (4) are about an inch long with only the end being threaded. What are they for?
The 18 pan washer screws (1) - are these for securing fans, HDDs, DVD drives etc??
Wire saddles I assume for cable tidying? What are mounting purse locks? And the lock board??
I know I must seem daft and it's all probably very obvious, but it irritates me that they don't assume I'm the idiot that I am and at least give a basic run down of what each part is for.
Anyway, I just want to clarify what each part is for. Please see my pic below.

The copper stand offs I know are for the motherboard. I assume I use the 8 hexagon screws (3 in the pic) are to secure those? (if so why not the same quantity of each?)
The 4 hexagon screws (4) are about an inch long with only the end being threaded. What are they for?
The 18 pan washer screws (1) - are these for securing fans, HDDs, DVD drives etc??
Wire saddles I assume for cable tidying? What are mounting purse locks? And the lock board??
I know I must seem daft and it's all probably very obvious, but it irritates me that they don't assume I'm the idiot that I am and at least give a basic run down of what each part is for.