Mokhtar Bazaraa released multiple editions. The (2005) and 4th edition (2011) are the most common. The problem numbers and even some chapter structures changed significantly. The best PDF is one that explicitly matches your assigned edition.

When you look at a solution, do not just copy the final matrix. Ask yourself: Why did the author select this specific leaving variable?

Never open the solutions manual immediately after reading a problem. Attempt to formulate the linear programming model, set up the initial Simplex tableau, or identify the dual problem on your own. Only open the PDF if you are completely stuck for more than 20 minutes with no forward momentum. Reverse-Engineer the Logic