Hold the middle of the side that is supposed to open between your pointer finger and thumb and slide them in opposite directions. It almost always works for me :D
But seriously, find a method that works for you. Start by learning common vocabulary, learning grammar rules, and finding a place to practice a language. That could be an instructor, class, online community, or pen pal. There are sites for the latter. Read books and newspapers in your target language and add their subtitles to the films you watch.
It rubs the lotion on its skin or else it gets the tube again.