how can we assemble pc ?

its very easy. all you need to do is read the manual of the motherboard. its all writen there and you can find more instruction on the net on how to do it step by step.

parts needed: a processor, motherboard, RAM, harddisk, casing, monitor, cdrom/dvdrom, graphics its easier if you have 1 preferred part already and choose your other parts depending on that 1st choice. me I always choose processor and video graphics as my primary aprts and just rotate balance my cost and rpeference on the other parts. and yes! you need to be properly grounded so to avoid static in those components.

This is easy to assemble PC if we have viewed this by hardware engineer one or two time .As any time the process is similar .Actually we have to find the plot where we can fit the slots .But proper training is required .Otherwise there may be problem .