Here's a beginner-friendly freestyle trick for you! This is one of the simplest flips a beginner can learn as well. There are two steps to this trick: First popping your board, secondly grabbing your board and flipping it.
For the first step, here's your foot placement: Front foot on the middle of your deck and your back foot on the tail. Step your front foot off - this transfers your weight to your back foot, popping your board up.
As for the second step, you'll grab the heelside edge with your leading hand (left for regular and right for goofy). Then, flip the board 360 and jump back on.
Happy skating and stay stoked!