XFOIL, AVL, XFLR5 for dummies.

I want to play with seeing (at least theoretically) the following:

Drooping ailerons (slow speed)

Flap settings for takeoff (with and without drooping ailerons)

Reflex flaps with and without reflex ailerons (high speed)



What are the advantages/disadvantages of XFOIL, AVL, XFLR5 ? (any others?)

What's easiest to start with?

What's the easiest to setup and use on a PC (low-end DELL laptop with Win10)



Any pointers?



Thanks