I know how to install packages in Anaconda using conda install and also how to install packages that are on PyPi which is described in the manual.
conda install
But h
Just to add to Cord Kaldemeyer's answer above, for the 2nd option. If you only want to link to a particular conda environment then add the .pth file to ~/anaconda3/envs/{NAME_OF_ENVIRONMENT}/lib/pythonX.X/site-packages/
~/anaconda3/envs/{NAME_OF_ENVIRONMENT}/lib/pythonX.X/site-packages/