There's Enjl's lunalua tutorial series on Youtube. The first video shows you how to find your way around in X2's editor, called PGE.
There's also a sticky thread in Help & Support.
Still using the legacy editor? Get SMBX2 and PGE, it will improve your experience significantly. Here's why.
And remember, Yoshi's are tools to be used and discarded.
ShadowStarX (06/14/18) wrote:
South Korea is easy deal