You can download the full text of Riot medicine or any of the Riot Medicine Guides for free at: https://riotmedicine.net/downloads/
These copies are being sold at-cost, but should you want to print your own, you can find the instructions on how to do so at the link below:
https://cryptpad.fr/slide/#/2/slide/view/xHPtc8wtZOPB2g31ZILg-kx4NhukklX9-Jmqa-hsVjk/present/