In order to get to edit mode on an OBJ Blender, you can follow these simple steps. First, open your OBJ file in Blender and make sure it is selected. Then, press the 'Tab' key on your keyboard to switch to edit mode. You will see the object change to show its vertices, edges, and faces, indicating that you are now in edit mode. From here, you can make various edits to the object such as moving vertices, creating new edges, and much more. When you are finished editing, you can press the 'Tab' key again to switch back to object mode. Mastering edit mode is essential for effective 3D modeling and object editing within Blender, so be sure to practice and familiarize yourself with this crucial feature.