Integrated Math 2 should be taken after Integrated Math I. Each Integrated Math course contains standards from all of the six conceptual categories (Number and Quantity, Algebra, Functions, Modeling, Geometry, and Statistics and Probability) with the goal of these courses being that math is presented as a connected subject. Integrated Math 2 contains: 26% of the total Algebra 1 standards, 65% of the total Geometry standards and 24% of the total Algebra 2 standards.
There is a free edition available here
If you would like to obtain a hard copy of the textbook (optional), you can find it with this information:
Big Ideas Mathematics: Integrated 2
Ron Larson and Laurie Boswell
Mailing and Billing Address: 15 Mountain View Court, Santa Cruz, CA 95062
Physical Address: 2560 Soquel Avenue Suites 201, 204, 205, Santa Cruz, CA 96062 | 831-331-5611 | firstname.lastname@example.org