Wow. Trying to build this as first project is like having an engine block asking 'Tell me how to build an Indy Racer".
Not saying it can't be done, but you have bit off a lot to chew. Additional skills you are going to need are Surface Mount Devices, Printed Circuit Board design (for high UHF/low SHF). Not to mention high end Oscilloscope, RF Generator, Spectrum Analyzer.
It appears that you are intending to transmit on Channel 1 of the WiFi band. What is the intended purpose of your device? It may be easier and more practical to modify existing devices.
Are you a licensed Amateur? If not, are you intended to operate this device under Part 15 rules? If so what laboratory do you intend to hire to conduct the certification testing?
The good news is that the principles of your design are straight forward and apply to transmitters at all lower frequencies. If you are new to building RF circuits, you can learn much by building circuits at MF or HF, that are simpler to get working and don't require specialized equipment.
I recommend some of the following books:
-Any junior college text on RF circuits
I'm sure others will have additional practical recommendations.
"Loading Zone: No Parking"