Try out Tutorial Mode to get a handle on the basic rules of the game, and then start playing for yourself in Free Battle Mode
[Pokmon TCG] N (The Best of XY [XY] 180/171) [Release Date/Price/Where To Buy] Including a reference to one of the most iconic scenes from the video games
Elite Fourum Japanese Teach/Tryout Sets Articles articles-guides Quuador April 24, 2018, 6:01pm 1 EDIT August 31, 2019: Finally updated to a proper article, adding all information provided by @hayo
Pre-orders for Secret Lair cards are live for a set period, with a specific release date also made known when pre-orders become available
Four mana for a 4/4 reach creature is already a good enough stat line that any red deck will happily play it
There just arent enough total oozes in the game (without including shapeshifters) to give you much choice when you slot them in