The main thing to be aware of is carefully taking the heatsink off without yanking the CPU off the socket (the pin locks are not very strong). It helps to run the computer beforehand, to heat the cpu and heatsink so that you lower the viscosity of the thermal paste.
you can search youtube for the topic; eg
https://www.youtube.com/watch?v=zKZX_R4X4Os
Also, check that all pins are straight, and be careful in aligning and seating the CPU. Pins are fragile. Consider it as practice for your future AM4 build.
When you go into the bios setup, what version and date does it display.
The 6300 is a very common and earlier Piledriver CPU, so it's likely that no update is required. But check the bios date anyways, and let us know what version.
For the prices that used fx-6300's are going for, probably quite a good upgrade: L3 (which was missing in propus), boost freqs (4+ghz), extra threads, the missing SSE 4.x, and a good match for the board.
http://www.cpu-world.com/Compare_CPUs/AMD_FD6300WMW6KHK,AMD_HDX840WFK42GM,AMD_HDX955FBK4DGI/
http://browser.geekbench.com/geekbench3/compare/8623400?baseline=8529095