Why I can not find download link for tor expert bundle? Why torproject.org removed it?
There used to be a Tor Expert Bundle back in the old days, even after Vidalia development was scratched. As AXO mentioned, the Windows Expert Bundle only supplies the latest tor and its dynamic libraries at https://www.torproject.org/download/tor/. But you can create your own "Tor+ Pluggable Transport". Extract the Expert Bundle, copy the "PluggableTransports" folder (containing obfsproxy,exe at the moment) from your Tor Browser installation directory and paste it in your "new" Tor extracted folder. Copy also your "Data/Tor" folder to that new folder and edit your torrc like before. If you're using tor bridges, it's still here: https://bridges.torproject.org/. This is the least you could do to make one. To customize your torrc, you can browse here for more details: https://tornull.org/ https://tornull.org/xeronet-rocket-torrc.php . But if I will recommend, using Tor Browser Bundle is all we need unless we're planning a multiple tor connection. We can also update the tor folder, edit the torrc if we want to. TBB is user-friendly. An alternative approach is using ProxAllium: https://github.com/DcodingTheWeb/ProxAllium