Get on that e-visa ASAP
The first thing that you need to know before going to Tajikistan is you can get on that e-visa ASAP. Before the party can begin, so many necessary forms must still be managed to complete. Tajikistan requires a visa unless you are from a former Soviet Union nation. Nationals of 121 countries can now get e-visas online using Tajikistan's official e-visa webpage. Use no other website; they are only out to take your soul/rip you off.
Tajikistan visas are $50 for 45 days, with an additional $20 if you require a GBAO permission to visit the Pamir area. There is no time restriction for applying, and the visa duration begins once you reach the country. Travelers have experienced delays in acquiring e-visas in recent months, so apply for your e-visa at least a few weeks before your trip to Tajikistan. Therefore, this is one of the things about Tajikistan you should know.