It will take a little practice, but using your drill will become very easy over time. First, planting in tilled ground is much easier to see where you've been and probably the best way to learn. Start out by making the first pass along the outside edge of the plot. Once you're at the end, just raise the drill, make a sharp turn and start planting again right beside the first pass, you should be able to see where the last "row" is. Just get it as close as you can without overlapping or veering off leaving a gap of unseeded ground.

Most drills are equipped with a seed metering system, which controls the seed drop rate. Once you determine what seed you're planting and how many #s per acre you want seeded, look either on the drill or owners manual for which gear or gearbox setting needed to achieve that rate with that particular seed.

It's a learning curve with a new drill and normally takes a bit to figure out what is ideal. Hope this helps some.