This is an installation overview of the iSpring WBG32B Whole House Water Filter. This may help you install your own. Included is a quick review on thoughts of the filter system.
iSpring Filter: https://www.amazon.com/gp/product/B008GNRMYK/ref=oh_aui_detailpage_o08_s01?ie=UTF8&psc=1
Shark Bite Hoses: https://www.amazon.com/gp/product/B00NYO2BO2/ref=oh_aui_detailpage_o01_s02?ie=UTF8&psc=1
Nipple (Lead Free):
PEX Cutter: https://www.amazon.com/gp/product/B0711458S8/ref=oh_aui_detailpage_o09_s01?ie=UTF8&psc=1