Horseticuffs

Thank you all for the info. I'll check the vids out!

Hello, folks. I've only been a modern PC gamer since around late 2015 when I inherited my brother's hand-me-down rig. Over the last few years I've made some upgrades and it's basically an entire new system now. One thing I've never done is overclock. My brother is an IT professionally, but he doesn't do it either, so I thought I'd ask my question here. Just yesterday I've ordered an MSI Z370 GAMING PLUS CFX ATX, a Cooler Master Hyper 212 LED CPU Cooler with PWM Fan, and some thermal paste. I intend to order an i7 8700k in the next month or so. Now the 8700k runs at 3.7 GHz stock, with a boost mode of 4.7 GHz. My question is what is "boost mode" exactly? I've seen it on my current rig in the BIOS but it doesn't DO anything since my current CPU isn't a "K" variant. Is it really is simple as pressing some button in the BIOS and *boom* it's a GHz faster? Is the cooler I've bought good enough to allow me to use that feature? I'm sorry for the questions I'm sure you've all seen a million times before, but I'm totally ignorant here. I've googled the question but everything I've read is all for really experienced people and I'm not sure if it's even the same thing as just using "boost mode". I'm scared of frying my new stuff, but if this is some pretty harmless feature that CPU and Mobo manufacturers put in, it seems like I'd be a fool NOT to use it. Thank you all for your time! Edit: I'm intending to use my old GPU (Gtx 1080) and my current RAM ( 4 sticks of 8gb Corsair Vengeance LPX DDR4 DRAM 2666MHz). PC Parts Picker says everything should be nice and compliant.