I try not to make it a lesson per se. I try to foster discussion and guide it towards the end goals of the manual. As I study the lesson, I write down thoughts and ideas that I may want to share or ask to stimulate the discussion. In my ward, the lesson time in priesthood is generally 35-40 minutes. If you have a group that likes to give input, the time will fly by and you may not cover all that you wanted to. If you have a group that sits quietly and listens without saying much, then your task will seem much harder. If you don't have much for ideas to talk about, then sometimes it helps to just have a volunteer read a section and then ask a question related to that section to draw some discussion out. I don't care for the style of a instructor standing up front and teaching, I prefer an instructor who fosters discussion within the group and they teach each other. If you don't have much material to work with, it is perfectly acceptable to go to lds.org and use talks or messages from the Ensign to bolster what you have or bring new viewpoints into the discussion.