Step 2. Start working in your CDK project (TypeScript)
Step 3. Start adding L1 constructs in your code by using their prefix name e.g. l1-s3-bucket equals to L1 construct s3.CfnBucket
Note: Once you start typing a prefix (explained in step 3), the corresponding snippet shows up in the dropdown menu. If this doesn't happen automatically, press ctrl + space to invoke IntelliSense and search for the prefix of the resource type that you want to add (as listed in step 3).