Dealing with junctions will be a process of dealing with changing priorities. Be aware of the routines for stop and give way. This will require looking and acting on what you see.
You are not expected to drive like an expert. But you are expected to drive safely. Look early and give yourself time to practice your MSM and PSL routines. Be comfortable as you approach a junction. Be aware of lines and signs. Give yourself enough time which means looking early.
Remember there is no right of way only an obligation to give way if that helps to avoid an accident. In doing this you will be mixing with the other traffic. You should not cause another driver to stop, slow, swerve or swear.