I don't have any good guides, but I do have personal experience.
I built my first one with a cool mind. (Had to leave it for the first night as I couldn't get the motherboard in.
) So have a cup of tea/coffee first.
Be very light with the CPU, match the arrow on the mobo socket with the arrow on the CPU, and let it drop in slowly.
Work out how to put the heatsink on before putting the mobo in the case and putting the thermal compound on.
Only use a rice sized grain of thermal compound.
Ram needs to be pushed in quite hard. (Check it is the right way round.)
Cheap cases cut - badly. You will not realise you are cut until you see blood, so keep looking out for it.
Dis charge static by touching a unpainted bit of a computer that is plugged into the mains.
You don't really need to worry about static unless you are running around on carpet.
Take your time.
Don't expect it to boot first time as you will likley have missed something. (last time it was the power switch for me