Computer Building Tips

Solution
The first thing that should go into the case are the Case fans if you are planning to put extra fans in.

Then install the CPU outside the case onto the Mobo. Now connect the RAM Modules onto the Mobo. Then Fix the Mobo into your case. After that, put the PSU in and fix it. Dont connect the cables yet.

Make sure the custome cooler has thermal component on its bottom. Else, put a single drop of a thermal compound you may have with you on the CPU surface exactly to the center of it. Then Fix the CPU Cooler onto the Mobo. Make sure the Thermal compound is spreading evenly. Do not move the Cooler over the paste on the CPU it will spread evenly if it is put properly on the center of the CPU surface.

Then start connecting the PSU power...
The first thing that should go into the case are the Case fans if you are planning to put extra fans in.

Then install the CPU outside the case onto the Mobo. Now connect the RAM Modules onto the Mobo. Then Fix the Mobo into your case. After that, put the PSU in and fix it. Dont connect the cables yet.

Make sure the custome cooler has thermal component on its bottom. Else, put a single drop of a thermal compound you may have with you on the CPU surface exactly to the center of it. Then Fix the CPU Cooler onto the Mobo. Make sure the Thermal compound is spreading evenly. Do not move the Cooler over the paste on the CPU it will spread evenly if it is put properly on the center of the CPU surface.

Then start connecting the PSU power distribution cables to the connectors in the Mobo. Connect the CPU Cooler fan control cable onto the mobo. Connect the Case fan cables into the fan controller nodes in the Mobo.

Take out the top most expansion slot cover and put the DVD Drive in and fix it. Then Put the SSD and then the HDD onto there respective slots.

Connect the sata cables from these to the Mobo. Then connect the Power cables to them.

Fix the Graphic Card as the last component into the Case. Then connect the 6/8 pin connector.

Now make sure all the Case connectors like the front USB Connectors, audio port connectors, HDD LED Display connectors and other connectors from the case are properly pinned into the Mobos respective pins.

I think I covered every step.
 
Solution
Builds are so much about personal preference. Personally, I take heat, power usage and noise into account more than others might. I'd just assume not be able to hear my PC through my headphones because it sounds like a vacuum cleaner or a jet engine. I also don't want to have to worry too much about temperatures, which means airflow is a must, even with a water cooler.

The first build looks good except for the case. I agree with the above reply that a bigger case if probably warranted for that set up. Is it a must? Absolutely not.

For the office PC, again chances are it will be in an area where airflow will be limited. The above posters build looks fine as office use wouldn't tax that CPU in the least so heat should be an issue. Do what you can to find a balance between airflow and noise. Heat is the enemy.

I'm one to test components before I install them. I'll "breadboard" the main components before I install them in the case. Sometimes it can make said installation a bit more difficult, but when compared against the possibility of installing all of that crap and discovering it doesn't work because the motherboard is DOA.
 
Tons of it. I started learning to assemble PC from there. But online guides are better since they cover each component step by step. So you do not need to worry about missing out something that your rig has got and the guy in the video has not.