The Moment You Touch Your Lulav, You've Entered Into Machloikes

Source Sheet (rebrand.ly/LulavMachloikes)
• Should one get an Esrogs before or after yom kippur?
• Do some of the Minim need to be bound together?
• Do you need to hold all 4 at once to be Yotzei?
• If you don't have all 4, should you take what you have?
• Do you need to hold them in both hands?
• What if you held Lulav in the left hand and Esrog in the right?
• Which do you pick up first? Which do you put down first?