May 15 surbhi bansal maam book

Friends i m prepairing for may 15 exams n as i was revising from latest book of surbhi maam relevant fr may 15 i found various new sections missing as compared to institute material, making me doubt over the surbhi bansal book.eg- in chptr of investigation sec 235 to 237 if old act 1956 in sb buk whereas new sec ie 210 to 213 given in institute mat fr d same..nybidy has knoeledge regrding d same..?