Help mof my first project

Hi All,
I’m trying to use Arduino for storing multi voltage output signals. Can you please help me by letting me know from where to start.

Many Thanks

Where are you aiming to store them ?
How frequently ?
How many ?
What range of voltages ?
Must the values be able to survive a power cut ?
What will read them back ?

Thanks for your response, for your below question please find the answers:

Where are you aiming to store them ? SD Card
How frequently ? each 60 seconds
How many ? 6 voltages
What range of voltages ? from 1 to 5 volts as maximum
Must the values be able to survive a power cut ? it already connected to UPS to save from any power cut, it's a long term test and i need to make sure to get data continuously for 6 months
What will read them back ? keep then as voltage reading, do not need to convert them

Hope I answer all your questions, please tell me if you need more info.
And thanks again

Can you please help me by letting me know from where to start.

Based on your answers I would start by looking at, running and understanding the AnalogInput example in the IDE