مجموعة من الدروس لإتقان EXCEL :
https://lbrry.com/book/getting_started_with_excel_2013_lbrry_1571394614
https://lbrry.com/book/working_with_data_and_excel_tables_lbrry_1571395086
https://lbrry.com/book/performing_calculations_on_data_lbrry_1571404811
https://lbrry.com/book/changing_workbook_appearance_on_excel_lbrry_1571404863
https://lbrry.com/book/focusing_on_specific_data_by_using_filters_on_excel_lbrry_1571404922
https://lbrry.com/book/reordering_and_summarizing_data_on_excel_lbrry_1571405017
https://lbrry.com/book/combining_data_from_multiple_sources_on_excel_lbrry_1571410943
https://lbrry.com/book/analyzing_data_and_alternative_data_sets_on_excel_lbrry_1571410987
https://lbrry.com/book/creating_charts_and_graphics_on_excel_lbrry_1571411020
https://lbrry.com/book/using_pivottables_and_pivotcharts_on_excel_lbrry_1571411059
https://lbrry.com/book/excel_conditional_formatting_lbrry_1571164259
https://lbrry.com/book/using_excel_to_draw_lbrry_1571160827
