Also I can't recommend Kill Team enough for all Warhammer newcomers. It's very easy and cheap to get started with. Just the Rulebook and 5-8 figures. The rules is almost identical with 8th edition.
Earth Reborn [earthreborn.ludically.com]. Not enough people know this brilliant #boardgame! Yes its rather advanced and for the experienced #tabletop gamers. But the scenarios let you learn it's game mechanics and rules.