These documents are very important, don't lose them.
Tips
usage
资料 is a very common word in work and study contexts. 查资料 (look up information), 准备资料 (prepare materials), 个人资料 (personal information/profile).
mistakes
Don't confuse 资料 (materials/data) with 信息 (xìnxī, information/message). 资料 implies organized reference materials; 信息 is more general information or a specific message.
