DecSoft App Builder has a contextual help that point you exactly to the control, property, event reference, etc. Just press the F1 key where you are in the IDE. For your convenience, the help is also available online in: www.getappbuilderhelp.com
Below you can download DecSoft App Builder. Once you install it, you can start to play with the included samples app, take a look at the IDE and use the provided contextual help. Remember that the help is also available online for your convenience here at www.getappbuilderhelp.com/. You can also use the DecSoft support forum for learning purposes.