The ‘loop’ is the simplest maneuver and can be done confidently, usually after about a 1/2 hour flying solo. Start at about 75ft and heading into wind.  Apply full throttle and gently pull up elevator .When just over the top of the loop bring the throttle back to idle and increase back to cruising speed when you are level.  The trick with the loop is to always start with the wings level and not to pull too hard.  It can be performed by almost any plane with adequate power