We’re going to need a few details.
Is it a adult or baby?
Do you want to use a tank or tub?
Here are a few threads you can read through that will give you some of the basics husbandry issues and how to overcome them:
Changing Your Ball Python Over to a Frozen Diet
New owner with non feeding hatchling, troubleshooting 101
Using tags like #setups and #husbandry will lead you to threads where other discuss how they set up their own enclosures.
The most important thing you can do in terms of making life a lot easier for both yourself and your new buddy is to leave them alone for the first week or two. I know it is difficult, especially as it will be your first, but it will make the transition smoother.