LOL - don't worry, you'll pick it all up
Because resin dolls are held together by elastic strung inside them they are not as stable and sturdy in posing always as vinyl dolls are. Depending on if the stringing is too tight or too loose you get phenomenon such as collapsing and kicking.
Collapsing is just what it sounds like. One minute your doll is standing just fine, the next moment it's doing a faceplant on the floor. I've had a Dollzone MSD size doll do a faceplant off of the top of my TV set - fortunately nothing broke!
Kicking happens when the legs are too tight, so you have the doll laying there in front of you and you're trying to dress it and all of a sudden, WHAP the leg swings up and bonks you. There are other variations on "kicking" as well, but it's all about how tight the elastic string inside is. Don't let this discourage you though - some dolls show up perfect from Day One