added python & mysql learning reference in bahasa (#4234)

* Update free-courses-id.md

added python learning reference

* Update free-courses-id.md

* Update free-courses-id.md

* Update free-courses-id.md

* alphabetize
Co-authored-by: NEric Hellman <eric@hellman.net>

free-courses-id.md

@@ -211,6 +211,7 @@
 
 ### MySQL
 
+* [Belajar MySQL](https://www.youtube.com/playlist?list=PL2O3HdJI4voGs6CiEUPXwt1fhLLqu30E_) - Indonesia Belajar
 * [Belajar MySQL/MariaDB](https://www.youtube.com/playlist?list=PLF82-I80PwDN7KSzsJOmd8mwHYe4aAqfF) - Guntur Budi
 
 
@@ -246,7 +247,10 @@
 * [Belajar Python Bahasa Indonesia [Dasar]](https://www.youtube.com/playlist?list=PLZS-MHyEIRo7cgStrKAMhgnOT66z2qKz1) - Kelas Terbuka
 * [Belajar Python Bahasa Indonesia [Versi Baru]](https://www.youtube.com/playlist?list=PLZS-MHyEIRo59lUBwU-XHH7Ymmb04ffOY) - Kelas Terbuka
 * [OpenCV untuk Pemula](https://www.youtube.com/playlist?list=PLl-Zj2iuqlwt4cBsBy_Ej7gNlXdQ7blCB) - NgodingPython
+* [Tutorial Belajar Python Pandas](https://www.youtube.com/playlist?list=PL2O3HdJI4voGdD_9xhVCTBoDTDNHpajm5) - Indonesia Belajar
 * [Tutorial Python Bahasa Indonesia](https://www.youtube.com/playlist?list=PLCZlgfAG0GXDc9Wcsi2fUn0pAr41GDL6m) - Sekolah Koding
+* [Tutorial Python GUI dengan TKinter](https://www.youtube.com/playlist?list=PL2O3HdJI4voHjX09IpdsiSBNnLRaR-CbJ) - Indonesia Belajar
+* [Visualisasi Data dalam Pemrograman Python (Matplotlib)](https://www.youtube.com/playlist?list=PL2O3HdJI4voHrfoMFvkDeblmjarDN8nC8) - Indonesia Belajar
 
 
 ### Django