The usual hardware checks and make sure your BIOS is updated. With the new Ryzen series, older motherboards might need a BIOS update before being able to run the 2000 series. You may apply for a bootkit and assistance if you happen to have an older motherboard: AMD 2000 series Support. Also, ensure to install the latest driver for your chipset(B350/X370/B450/X470) and enable to AMD Ryzen power plan. Also, make sure when buying RAM it is on the QVL list however by now most DDR4 kits should work with Ryzen since the BIOS Mirco code has matured greatly.
You also want to download the following programs for stress testing your overclock. These are a vital tool for stress testing and monitoring if you already have tools you can use those but these programs I highly recommend and were used while writing this overclocking guide.
- HWiNFO64: https://www.hwinfo.com/download/
- Prime 95: https://www.mersenne.org/download/
- Heaven Benchmark: https://benchmark.unigine.com/heaven