General PC Maintenance

I've recently completed a new build, and would love to hear what others do and recommend for maintenance.

A few concrete questions I have are:

1. How often should I clean dust from components and is compressed air the best method?

2. Do I need to reapply thermal paste every so often to the cpu?

3. Is there a sort of general check up I should run from time to time to make sure everything's working as it should?

4. Any other key maintenance tasks?

Answers to the above or any other tips or suggestions welcome!

Submitted December 31, 2017 at 05:42AM by mvalen122 http://ift.tt/2CebIDk