One mnemonic that stuck with me: you can remember the start and end characters (/^foo$/) by imagining an animal, like a rhino: the ^ is the horn at the front, t

One mnemonic that stuck with me: you can remember the start and end characters (/^foo$/) by imagining an animal, like a rhino: the ^ is the horn at the front, the $ is the long curvy tail at the end.