In section 123, row 8, seats are numbered from left to right as you face the court. Thus, seat 1 is the aisle seat farthest from the Warriors (visitor) bench. In your set of seats, seat 18 is closest to the aisle and closest to the Warriors bench.
Some of the most unique sections at the Q are located in the corners of the lower level. Some of these sections begin at floor level, are interrupted by the Founder's Suites and then continue in the Arena level. Others begin at floor level and continue uninterrupted to the Arena level. And the last kind begin at row 10 and continue to the top of the Arena level.
Among these sections, you'll want to completely avoid the lower portions of 106, 111, 123 and 128. Rows 1-14 in these sections are located at floor level, but they have some of the worst sightlines among 100 level sections. The upper rows in these sections have better angles towards center court and are a much cheaper ticket.
When considering other corner sections, continue to choose higher rows for the best experience. Despite being at floor level, the first rows in sections 103, 114, 120 and 131 are a dozen rows from the court. Save some money and sit near row 15 where you'll have better looks at the other side of the court and where you'll be closer to the concourse tunnel.