I am confused. If I am going to purchase or sell this stock am I going to buy or sell it for these bid prices or these ask prices? please clarify.

Overview Market By Price Market By Order Bids Price 74.65 74.63 74.62 74.61 74.6 74.54 74.53 74.52 74.51 74.5 6.190 5 5 Asks \begin{tabular}{c|c|c} \hline Price & Qty & # \\ 74.7 & 1,000 & 1 \\ 74.75 & 19,328 & 1 \\ 74.78 & 10 & 1 \\ 74.87 & 350 & 1 \\ 74.95 & 1,150 & 2 \\ 74.97 & 100 & 1 \\ 74.98 & 3,000 & 3 \\ 74.99 & 11,461 & 3 \\ 75.0 & 33,139 & 10 \\ 75.06 & 50 & 1 \\ \hline 75 \end{tabular}