The first edition of the free, EasyEDA spice Simulation ebook is now available straight from the Help button in the Editor window: >***i* > Help Topics > Simulation ebook** or via: >**<https://easyeda.com/Doc/Simulation-eBook/>** The book shows how to create and successfully run spice simulations of circuits in EasyEDA, using the powerful free and open source software, ngspice. It is aimed at novices to simulation and experienced users alike and is illustrated with dozens of linked, live simulation examples. Starting with some of the most common pitfalls that can stop a simulation in it's tracks - leading to hours of frustration in trying to diagnose the problem - and building up in managable chunks towards more advanced topics, the EasyEDA spice Simulation eBook describes and illustrates simulation skills so that by the end of the book everyone should be able to successfully build, run and interpret the results of even the most advanced types of circuit simulations with confidence and ease. Topics covered are from the most basic such as: >[Every simulation must have a ground node] and; >[Every point in a simulation schematic must have a DC path to ground] through using [expressions], [parameters] and [functions] to expert skills such as [arbitrary or B sources], [device models] and [post-simulation processing to make advanced measurements]. The book contains a wealth of insider knowledge, hints, tips and techniques such as [understanding the effects of the finite open circuit resistances of switches in spice] and [ways of starting up "difficult" circuits and reducing simulations times]. Users can skim through the eBook running the simulations and delve back into the text for further background, hints and tips or they can start with the text and play with the simulations to see the points being discussed in the book. It needs a bit of tidying up and there are bound to be some typos in it but the useful stuff is all there. If you have any comments about it or there are topics you'd like to see added, please let us know. [Every simulation must have a ground node]: https://easyeda.com/Doc/Simulation-eBook/Introduction-to-using-a-simulator.htm#AllsimulationcircuitsMUSThaveagroundnode [Every point in a simulation schematic must have a DC path to ground]: https://easyeda.com/Doc/Simulation-eBook/Introduction-to-using-a-simulator.htm#EverypointinasimulationschematicMUSThaveaDCpathtoground [expressions]: https://easyeda.com/Doc/Simulation-eBook/Expressions.htm [parameters]: https://easyeda.com/Doc/Simulation-eBook/Parameters.htm [functions]: https://easyeda.com/Doc/Simulation-eBook/Functions.htm [arbitrary or B sources]: https://easyeda.com/Doc/Simulation-eBook/B-sources.htm [device models]: https://easyeda.com/Doc/Simulation-eBook/Device-models.htm [post-simulation processing to make advanced measurements]: https://easyeda.com/Doc/Simulation-eBook/Making-measurements-of-simulation-results.htm [understanding the effects of the finite open circuit resistances of switches in spice]: https://easyeda.com/Doc/Simulation-eBook/Introduction-to-using-a-simulator.htm#ValuesandDCpathsofRLCcomponents [ways of starting up "difficult" circuits and reducing simulations times]: https://easyeda.com/Doc/Simulation-eBook/Initial-conditions-and-starting-up-circuits.htm