can any1 tel me wher i can find help 4 "John Thompson’s Modern course 4 Piano"- 1st grade book?

i hav this buk and i hav learnt some lessons from my piano instructor, but now hes not available n i wish2 continue on my own. i wud like 2 know abt the few notations used in the buk like stacatto, accent

Bookstores?