Yeah, we unfortunately ran out of time to add a tutorial level, but I added a "controls" section over on the game's page at https://aejjee.itch.io/samnslime if you want to give it another go. As for the crash when you manually move the slimes, we were able to identify and and fix the issue internally after the deadline, but we aren't allowed to upload the updated build until the voting process is over. :/
Thanks for playing!