Topic: Self-confidence?

Hello dear users, I would like some advice on literature on self-confidence and research. Important: I'm really just talking about self-confidence, not self-esteem or anything like that! I can't seem to find any precise, documented research on this! Thank you very much in advance for your help! Greetings

Where can I find free German specialist literature and images?

Hello, I'm generally looking for a free, German-language resource for specific questions on certain topics. (I'd prefer to use it on my smartphone—it's quite a distance to the nearest library, and unfortunately, bus tickets and a library membership are beyond my budget.) First of all I would be grateful for anything 😅