Further to JahuraC below, 'pick up' can also be used for learning something e.g. 'she has picked up the language'. It suggests an informal learning process. 'Pick out' can also be used for identifying a person or thing : 'can you pick out the person who did that ?'

Thank you for the explication... I truly appreciate it 🙂

Pick up is an action. So for example, if I 'pick up' a pen, then I grab a pen and lift it up. Another example is I pick up the paper from the floor. Pick out is similar to choosing. If I 'pick out' a pen, then I have a bunch of pens, and I'm, for example picking one to write with. Another example is: I pick out a dress to wear. Let me know if you have anymore questions!