How can I easily setup a system if I need to creat a report for Only Laptops so it may show me details of all the laptops we have,
Enter find mode and specify "laptops". Perform the find. If needed use sort records to sort your results. This can be done manually by selecting menu options or in a script.
And you can likewise perform finds for a specific custodian and/or a range of dates.
This thread on scripted find examples may help: Scripted Find Examples
And here is a tutorial on summary reports that may be helpful: Creating Filemaker Pro summary reports--Tutorial