Begin by thoroughly understanding the Paystack API. Paystack provides a comprehensive API that allows you to retrieve transaction data, customer information, and more. Refer to the Paystack API documentation to familiarize yourself with available endpoints and authentication methods.

Set up a development environment where you can securely store credentials and run scripts. This could be a local machine or a cloud server. Ensure you have Python or a similar programming language installed, as it will be used for making API calls and interacting with Redis.

Use the Paystack secret key to authenticate API requests. In your script, incorporate the secret key as a part of the headers to make authorized requests. An example in Python:
```python
import requests

headers = {
'Authorization': 'Bearer YOUR_SECRET_KEY'
}
response = requests.get('https://api.paystack.co/transaction', headers=headers)
```

Use the Paystack API to fetch the data you need. This could be transaction data, customer records, etc. Depending on your requirements, make GET requests to the necessary endpoints and handle pagination if there’s large data:
```python
data = response.json()
transactions = data['data']
```

Install and set up a Redis server if you haven’t already. Redis can be installed on your development machine or set up on a cloud instance. Ensure that your Redis server is running and accessible from your script.

Process the fetched data as needed, then store it in Redis. Use the Redis client library for your chosen programming language to interact with your Redis instance. Here’s an example in Python using `redis-py`:
```python
import redis

r = redis.StrictRedis(host='localhost', port=6379, db=0)

for transaction in transactions:
transaction_id = transaction['id']
r.set(transaction_id, str(transaction))
```

If you need to move data from Paystack to Redis regularly, automate the process by scheduling the script to run at specific intervals. Use cron jobs on Unix-based systems or Task Scheduler on Windows to achieve this. Ensure your script handles incremental updates to avoid duplicating data.

By following these steps, you can effectively move data from Paystack to Redis without relying on third-party connectors or integrations.