Relatively new to Sea fishing. Always had someone set my gear up for me.

[Mr Fish]

I can sense an argument starting!

World wars have started over less!

 

[Angrybear]

I saw something on youtube where he wraps electrical tape around the reel first before he puts braid on the reel because it acts as a cushion. Line lay? Does that mean how the line sits on the reel? I will eventually get a better spinning rod and reel but I just bought a cheap kit so I can just get out there. I'm tempted to try braid on my spinning setup maybe 20lb?

Braid is very thin compared to mono lb for lb,
some people say use heavier braid, but that defeats the object, so fill the spool 1/3-1/2 with tape & then put on the same length of thinner braid as the length of mono the reel will hold.
Line lay is how the line is wound on to the reel, layer on layer
older fixed spool reels designed for mono the spool was quite deep & quite short & went forward/back over maybe 25-35mm because the line would sit in nice tight parallel layers, but braid is so thin the rolls need to overlay at an angle to the layer underneath, not to dig in,
so the modern spools are much longer, shallower, often slightly conical & move forward/back twice as far.
The breaking strain of the line needs to match the outfit & also needs to be the weak point so it breaks before the rod/reel,
My little 7' spinning outfit has 8lb braid, my 11' bass plugging outfit has 15lb, I did use 20lb up-tiding from a boat.