This study investigates the resources used by childhood cancer survivors (CCS) to learn about their cancer histories and evaluates if CCS feel these resources prepare them to manage their health needs as young adults. Young adult participants (aged 18-30 years) were diagnosed with cancer at ≤ 10 years and recruited by word of mouth and from social media and/or non-profit organizations and completed semi-structured interviews. A descriptive thematic analysis guided by an essentialist/realist paradigm combined inductive and deductive approaches to identify key themes. Fourteen participants were interviewed, and six key themes were identified: (1) CCS are aware of general cancer history (age at diagnosis, treating hospital, cancer type), (2) CCS are unaware of treatment regimen (medications and duration), (3) CCS want to learn more about their treatment regimens and (4) potential late effects of treatment, (5) CCS use diverse resources to learn about their cancer histories and potential late effects, and (6) survivors' interests to learn about their cancer histories change over time. Limited knowledge of their cancer treatments leaves some CCS unprepared to manage their health needs as young adults or to address potential risk of late effects. CCS recognize their limited knowledge, but the resources available to them fall short of their information needs. Identifying the shortcomings of resources used by CCS provides evidence for how resources need to be improved to meet survivors' cancer education needs.