Asalam-o-Alikum to all,
please refer me electronics book for theory ,which contain behavior and characteristics etc like this.
i want to study in detail.
For simulators, i recomend livewire by new wave concept limited.it's very easy and simple to use for begineers.for the book you can try principles of electronics published by s-chand.its easy to understand
For a simulator I would suggest you use a SPICE based one so you can add your own models. LTspice is free and widely used. It also has an interface to Eagle.