Going through the sections in this guide and considering the questions asked based on your specific application increases the chances of successfully developing a low-power, small form factor cellular device.
To start developing, we recommend getting an nRF9160 DK and reading Getting started with nRF9160 DK. We also have the Nordic Thingy:91™, a prototyping platform with its own battery, multitude of sensors, and a small form factor. Nordic Thingy:91 is great for making prototypes and showcasing your proofs of concepts.
If you have any technical questions before, during, or after your development, contact our Technical Support team at Nordic DevZone where you can create a public or private ticket. You can also find extensive blogs and guides made by and for developers.