Building-FTC

Basic bot build instructions found on Firstinspires.org site

REV's Youtube channel has lots of great video guides an building concepts

Older Build Guides:

REV Class Bot - link

2017 - Vertical Pushbot Build guide (uses REV Expansion and Phone) - link

2017 - Horizontal Pushbot Build guide (uses REV Expansion and Phone) - link

Below are some additional resources I've found. 

Mecanum Drive Train

Linear Slide options

More resources:

MGN Linear Guide

GMZero

Misumi slides SRY2740

REV Linear Motion