Create cyfrinUpdraft.md

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docs/courses/cyfrinUpdraft.md

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+---
+sidebar_position: 3
+---
+
+# Cyfrin Updraft
+
+[Cyfrin Updraft](https://updraft.cyfrin.io/) 
+
+Cyfrin Updraft is the leading [smart contract development and security auditing learning](https://updraft.cyfrin.io/) platform to learn:
+
+- Blockchain fundamentals
+- Solidity smart contract development
+- Foundry testing and deployment
+- Smart contracts auditing and security
+
+With 50+ hours of courses and 300 videos and written lessons, to go from zero to blockchain hero.
+
+Completely free and open-sourced!
+
+<p align="left">
+  <a href="https://twitter.com/cyfrinUpdraft">
+    <img height='30' src="https://skillicons.dev/icons?i=twitter" />
+  </a>
+  <a href="https://discord.gg/cyfrin">
+    <img height='30' src="https://skillicons.dev/icons?i=discord" />
+   </a>
+  <a href="linkedin.com/school/100262608">
+    <img height='30' src="https://skillicons.dev/icons?i=linkedin" />
+   </a>
+</p>
+