Add README.md and tutorial walkthrough for script-only tutorials

Author: mwunderl

tuts/197-ec2-describe-instances/README.md

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+# Ec2 Describe Instances
+
+A read-only script that queries Ec2 resources and displays information.
+
+## Running
+
+```bash
+bash ec2-describe-instances.sh
+```
+
+## What it does
+
+1. Listing all instances"; aws ec2 describe-instances --query 'Reservations[].Instances[].{Id:InstanceId,Type:InstanceType,State:State.Name,Name:Tags[?Key==`Name`].Value|[0]}' --output table 2>/dev/null || echo "  No instances
+2. Counting by state
+
+## Resources created
+
+None — this script is read-only.
+
+## Cost
+
+No cost. This script only reads existing resources.
+
+## Related docs
+
+- [AWS CLI ec2 reference](https://docs.aws.amazon.com/cli/latest/reference/ec2/index.html)
+

tuts/197-ec2-describe-instances/ec2-describe-instances.md

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+# Ec2 Describe Instances
+
+## Prerequisites
+
+1. AWS CLI installed and configured (`aws configure`)
+2. Appropriate IAM permissions for the AWS services used
+
+## Step 1: Listing all instances"; aws ec2 describe-instances --query 'Reservations[].Instances[].{Id:InstanceId,Type:InstanceType,State:State.Name,Name:Tags[?Key==`Name`].Value|[0]}' --output table 2>/dev/null || echo "  No instances
+
+The script handles this step automatically. See `ec2-describe-instances.sh` for the exact CLI commands.
+
+## Step 2: Counting by state
+
+The script handles this step automatically. See `ec2-describe-instances.sh` for the exact CLI commands.
+

tuts/200-ec2-vpc-subnets/README.md

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+# Ec2 Vpc Subnets
+
+A read-only script that queries Ec2 resources and displays information.
+
+## Running
+
+```bash
+bash ec2-vpc-subnets.sh
+```
+
+## What it does
+
+1. Listing VPCs
+2. Listing subnets
+3. Listing route tables
+4. Listing internet gateways
+
+## Resources created
+
+None — this script is read-only.
+
+## Cost
+
+No cost. This script only reads existing resources.
+
+## Related docs
+
+- [AWS CLI ec2 reference](https://docs.aws.amazon.com/cli/latest/reference/ec2/index.html)
+

tuts/200-ec2-vpc-subnets/ec2-vpc-subnets.md

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+# Ec2 Vpc Subnets
+
+## Prerequisites
+
+1. AWS CLI installed and configured (`aws configure`)
+2. Appropriate IAM permissions for the AWS services used
+
+## Step 1: Listing VPCs
+
+The script handles this step automatically. See `ec2-vpc-subnets.sh` for the exact CLI commands.
+
+## Step 2: Listing subnets
+
+The script handles this step automatically. See `ec2-vpc-subnets.sh` for the exact CLI commands.
+
+## Step 3: Listing route tables
+
+The script handles this step automatically. See `ec2-vpc-subnets.sh` for the exact CLI commands.
+
+## Step 4: Listing internet gateways
+
+The script handles this step automatically. See `ec2-vpc-subnets.sh` for the exact CLI commands.
+

tuts/201-lambda-logging/README.md

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+# Lambda Logging
+
+A read-only script that queries Logs resources and displays information.
+
+## Running
+
+```bash
+bash lambda-logging.sh
+```
+
+## What it does
+
+1. Listing Lambda log groups
+2. Getting recent log events from a function
+
+## Resources created
+
+None — this script is read-only.
+
+## Cost
+
+No cost. This script only reads existing resources.
+
+## Related docs
+
+- [AWS CLI logs reference](https://docs.aws.amazon.com/cli/latest/reference/logs/index.html)
+

tuts/201-lambda-logging/lambda-logging.md

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+# Lambda Logging
+
+## Prerequisites
+
+1. AWS CLI installed and configured (`aws configure`)
+2. Appropriate IAM permissions for the AWS services used
+
+## Step 1: Listing Lambda log groups
+
+The script handles this step automatically. See `lambda-logging.sh` for the exact CLI commands.
+
+## Step 2: Getting recent log events from a function
+
+The script handles this step automatically. See `lambda-logging.sh` for the exact CLI commands.
+

tuts/204-ec2-network-interfaces/README.md

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+# Ec2 Network Interfaces
+
+A read-only script that queries Ec2 resources and displays information.
+
+## Running
+
+```bash
+bash ec2-network-interfaces.sh
+```
+
+## What it does
+
+1. Listing network interfaces
+2. Counting by type
+
+## Resources created
+
+None — this script is read-only.
+
+## Cost
+
+No cost. This script only reads existing resources.
+
+## Related docs
+
+- [AWS CLI ec2 reference](https://docs.aws.amazon.com/cli/latest/reference/ec2/index.html)
+

tuts/204-ec2-network-interfaces/ec2-network-interfaces.md

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+# Ec2 Network Interfaces
+
+## Prerequisites
+
+1. AWS CLI installed and configured (`aws configure`)
+2. Appropriate IAM permissions for the AWS services used
+
+## Step 1: Listing network interfaces
+
+The script handles this step automatically. See `ec2-network-interfaces.sh` for the exact CLI commands.
+
+## Step 2: Counting by type
+
+The script handles this step automatically. See `ec2-network-interfaces.sh` for the exact CLI commands.
+

tuts/207-ec2-volumes/README.md

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+# Ec2 Volumes
+
+A read-only script that queries Ec2 resources and displays information.
+
+## Running
+
+```bash
+bash ec2-volumes.sh
+```
+
+## What it does
+
+1. Listing volumes
+2. Volume summary"; echo "  Total: $(aws ec2 describe-volumes --query 'Volumes | length(@)' --output text) volumes
+
+## Resources created
+
+None — this script is read-only.
+
+## Cost
+
+No cost. This script only reads existing resources.
+
+## Related docs
+
+- [AWS CLI ec2 reference](https://docs.aws.amazon.com/cli/latest/reference/ec2/index.html)
+

tuts/207-ec2-volumes/ec2-volumes.md

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+# Ec2 Volumes
+
+## Prerequisites
+
+1. AWS CLI installed and configured (`aws configure`)
+2. Appropriate IAM permissions for the AWS services used
+
+## Step 1: Listing volumes
+
+The script handles this step automatically. See `ec2-volumes.sh` for the exact CLI commands.
+
+## Step 2: Volume summary"; echo "  Total: $(aws ec2 describe-volumes --query 'Volumes | length(@)' --output text) volumes
+
+The script handles this step automatically. See `ec2-volumes.sh` for the exact CLI commands.
+