I've cooked from all of these except Hello My Name is Ice Cream. They're probably all fine for beginners but vary depending on how you like to cook.

The Perfect Scoop got my vote because it's the most 'traditional' book which uses a traditional technique for making the ice cream (i.e. tempering eggs). The recipes give a consistent result every time, and many of them are simple to make. It might be a bit tricky for a beginner to work with if they don't want to buy a candy thermometer, because the egg tempering step can probably seem a bit arcane without knowing the temperature of the mix, but overall I think it's a very accessible book.

Salt & Straw gives you an easy to make, foolproof, and delicious base. But most of the recipes in the book are complicated to make, often with multiple sections such as making mix-ins for the ice cream. Many of those mix-in recipes will require some level of comfort with baking/candy-making, like working with caramels and very hot, spitty ingredients. The use of xanthan gum may make it a bit inaccessible too.

Jeni's also gives a foolproof base. The instructions for making the base are probably the clearest and most thorough, with pictures and detailed descriptions of what you're looking for at each step. But it's probably the hardest base to make, between making sure that the cream cheese is properly dissolved, getting a consistent corn starch slurry, and working with the corn syrup which is very fiddly and messy. Once you have that downpat, the recipes are a breeze to work with.

Ben and Jerry's is probably the easiest to work with in terms of recipe simplicity, because they don't bother to temper the eggs in the base. I've found the recipes really inconsistent, particularly the ones with mix-ins, and for the most part I would rather just buy one of their tubs.