I'm taking a course in continuum mechanics this semester and the instructor is using a set of notes to teach out of it, problem is, I don't really like them. Can anyone recommend an engineering/applied physics oriented introductory continuum mechanics textbook that uses the Einstein summation convention (a repeated index once in subscript and once in superscript implies summation over that index)? Also, if anyone has a quick explanation of the advantages, if there are any, of Einstein notation over the (ordinary?) index notation I would like to know! Thank you!