Alphonce Computing Centre provides computer training, sales, maintenance, and secretarial services. It has trained over 500 candidates from government ministries, organizations, and individuals since being established in late 2012. The office is located in Mbeya City. The document provides instructions on various Microsoft Excel functions including formatting text, adding serial numbers, summing numbers, and assigning grades using formulas. The steps describe how to center headings, use bold and italics, set cell formatting options, and calculate sums and grades within tables.