@@ -13,6 +13,19 @@ web applications.
 
 
 ### Resources about networking
+The "Let's code a TCP/IP stack" series along with its 
+[open source code](https://github.com/saminiir/level-ip) gives a ton of 
+context on how TCP/IP works while providing the code for implementing the 
+foundational pieces. You will likely need to pair this with a more theoretical
+reference tutorial such as [RFC 1180](https://tools.ietf.org/html/rfc1180)
+to have a more complete understanding of the protocol:
+
+1. [Ethernet & ARP](http://www.saminiir.com/lets-code-tcp-ip-stack-1-ethernet-arp/)
+1. [IPv4 & ICMPv4](http://www.saminiir.com/lets-code-tcp-ip-stack-2-ipv4-icmpv4/)
+1. [TCP Basics & Handshake](http://www.saminiir.com/lets-code-tcp-ip-stack-3-tcp-handshake/)
+1. [TCP Data Flow & Socket API](http://www.saminiir.com/lets-code-tcp-ip-stack-4-tcp-data-flow-socket-api/)
+1. [TCP Retransmission](http://www.saminiir.com/lets-code-tcp-ip-stack-5-tcp-retransmission/)
+
 * [Monitoring and Tuning the Linux Networking Stack: Receiving Data](https://blog.packagecloud.io/eng/2016/06/22/monitoring-tuning-linux-networking-stack-receiving-data/)
   along with 
   [Monitoring and Tuning the Linux Networking Stack: Sending Data](https://blog.packagecloud.io/eng/2017/02/06/monitoring-tuning-linux-networking-stack-sending-data/)
 
@@ -43,6 +43,11 @@ for processing payments.
 
 
 ### Resources about Stripe
+* [Stripe’s payments APIs: the first ten years](https://stripe.com/blog/payment-api-design)
+  has a ton of great context about how Stripe's payments API has evolved,
+  its architecture, how they expanded it over time, and generally a bunch
+  of solid storytelling behind how it has been built.
+
 * [How Stripe Designs Beautiful Websites](https://leerob.io/blog/how-stripe-designs-beautiful-websites)
   explains the process for how Stripe creates their gorgeous design that
   makes people want to use the service and explore what else they can