Order Description

I want the way of writing to be very simple not very technical or complicated. imagine your trying to explain this to all kinds of people ( educated or not)

First paragraph.
History of sequencing ( sanger sequencing)
2nd paragraph
History of Next generation sequencing
3rd paragraph ( make it steps )
how to do Exome sequencing ( Lab technique)
last paragraph ( make it steps)
How to do SNP Microarray ( Lab technique)

Please only use sources from online scientific papers.