Followings are links which may be helpful for computational chemistry research:
1. A computational chemistry class from Germany: https://www.cup.uni-muenchen.de/ch/compchem/
2. A computational chemistry class by Prof. Sherrill at Georgia Tech: http://vergil.chemistry.gatech.edu/courses/chem6485/
3. Basis Set Exchange: https://www.basissetexchange.org/
4. Sobereva's blog (in Chinese): http://sobereva.com/. One can translate it into English using Google Translation. Nowadays Google Translation is very powerful.