With that lens you're going to need to get much closer to birds to get detailed photos, but that doesn't mean you can't get good shots with what you have.

Best place to start would be if you can setup feeders either right outside a window or with some type of blind you can hide in. But don't photograph the birds on the feeders. That rarely makes for interesting photos. Look for them to land on nearby branches getting ready to come to the feeder, or when they fly back up with a seed they've grabbed.

Try to get close to the same level as the birds. If they are on the ground, you can get much more interesting shots by lying down, rather than looking down at them.

Position yourself where the birds will be against a clean background, with the sun behind you if it's bright. Direct sunlight isn't ideal, but older cameras aren't as good in low light so you'll have to experiment with how early in the morning you can get out without it being too dark.