diff --git a/Lectures/Chapter1-Introduction/OP-Chapter2-Part1.pdf b/Lectures/Chapter1-Introduction/OP-Chapter2-Part1.pdf new file mode 100644 index 0000000..12db97b Binary files /dev/null and b/Lectures/Chapter1-Introduction/OP-Chapter2-Part1.pdf differ diff --git a/Lectures/Chapter1-Introduction/OP-Chapter2-Part2.pptx b/Lectures/Chapter1-Introduction/OP-Chapter2-Part2.pptx new file mode 100644 index 0000000..d6376b5 Binary files /dev/null and b/Lectures/Chapter1-Introduction/OP-Chapter2-Part2.pptx differ