diff --git a/02.Basic_Concepts_I.pdf b/02.Basic_Concepts_I.pdf
index 78afea0..b086320 100644
Binary files a/02.Basic_Concepts_I.pdf and b/02.Basic_Concepts_I.pdf differ
diff --git a/03.Basic_Concepts_II.pdf b/03.Basic_Concepts_II.pdf
index ae368bf..aece18c 100644
Binary files a/03.Basic_Concepts_II.pdf and b/03.Basic_Concepts_II.pdf differ
diff --git a/04.Utilities.pdf b/04.Utilities.pdf
index 37a926d..e7a3978 100644
Binary files a/04.Utilities.pdf and b/04.Utilities.pdf differ
diff --git a/05.Object_Oriented.pdf b/05.Object_Oriented.pdf
index a8603d6..bf0c3ef 100644
Binary files a/05.Object_Oriented.pdf and b/05.Object_Oriented.pdf differ
diff --git a/08.Iterators_Containers_Alg.pdf b/08.Iterators_Containers_Alg.pdf
index f3a811f..e252b52 100644
Binary files a/08.Iterators_Containers_Alg.pdf and b/08.Iterators_Containers_Alg.pdf differ
diff --git a/09.Code_Organization_Convention.pdf b/09.Code_Organization.pdf
similarity index 62%
rename from 09.Code_Organization_Convention.pdf
rename to 09.Code_Organization.pdf
index c200beb..82133fd 100644
Binary files a/09.Code_Organization_Convention.pdf and b/09.Code_Organization.pdf differ
diff --git a/10.Code_Convention.pdf b/10.Code_Convention.pdf
new file mode 100644
index 0000000..d0b1990
Binary files /dev/null and b/10.Code_Convention.pdf differ
diff --git a/10.Debugging_Tools.pdf b/11.Debugging_Tools.pdf
similarity index 97%
rename from 10.Debugging_Tools.pdf
rename to 11.Debugging_Tools.pdf
index f788fd7..b242c38 100644
Binary files a/10.Debugging_Tools.pdf and b/11.Debugging_Tools.pdf differ
diff --git a/11.Advanced_Topics.pdf b/12.Advanced_Topics.pdf
similarity index 94%
rename from 11.Advanced_Topics.pdf
rename to 12.Advanced_Topics.pdf
index 3915344..20497f0 100644
Binary files a/11.Advanced_Topics.pdf and b/12.Advanced_Topics.pdf differ