'puedo' Is the first person form of 'poder', which is a verb meaning 'to be able to'
You would use it for saying things you are capable of doing, be it right now, or something you're planning to do later.
Yo puedo levantar autos [I can lift cars]
Yo puedo traer los manteles [I can bring the tablecloths. Here we're using it for 'future']
be careful to not confuse it with a word written exactly the same, 'poder', which means 'might, strenght'