Hey there!

It's easy really, just set aside some time and when you hover over any option and press h it will display a paragraph or so about what exactly this is and if you can safely remove it.

Usually it will even say something like:
"If you don't know what to do say y here"

Some things you can obviously get rid of, like support for alternative filesystems or esoteric network protocols.

I'm not an advanced user and I can do it, I'm positive you can too!

Just take your time :)

Oh and also!
Two things there is something called genkernel and a command make defconfig

I don't have experience with genkernel but I think that it generates a kernel fit to your hardware.

Make defconfig makes the default configuration that should work for pretty much every 64 bit computer