Most people worry about where to sit, how to sit, what cushion to use … this is all nice, but it’s not that important to get started. Start just by sitting on a chair, or on your couch. Or on your bed. If you’re comfortable on the ground, sit cross-legged. It’s just for two minutes at first anyway, so just sit. Later you can worry about optimizing it so you’ll be comfortable for longer, but in the beginning it doesn’t matter much, just sit somewhere quiet and comfortable.