Cooking HELP PLEASEEE

Hey so I'm pretty small and I'm trying to gain weight and just learn how to cook. I've tried here and there but for the life of me can't do it. I'll literally mess up the most basic thing or it comes out gross. does anyone have any recipes I can try that are simple and will help me gain some weight. I would need enough for me and my bf and possibly a plate I can take to work the next day. also I get the kitchen Monday Tuesday and Thursday so if there's any meals that are good to pre make and re heat would be cool too. thankss guys :)