Easy seasoning on first use, then it is just have fun and use them for everything.  Some may find them heavy, but I love cast iron and these are sized for easy use and manageability.  I cook, fry and bake in case iron and these will get plenty of use and look like they can take it and blacken up nicely becoming hand me downs.  Very versatile set of sizes.  If you have been wanting to enter the wold of cast iron this is a great set to get you started.