Learning to analyze deals

[Monico Lorenzana]

Hello everyone, My name is Monico Lorenzana, I'm an aspiring real estate investor out here in Southern California. To make a long subject short, I'm learning to find home's ARV and learning to structure an offer (if you'd like more information about me please don't be afraid to ask, I just don't want to share information no one is interested in haha).

My questions: 

1. Is is smart to find comps going back 6 months in this market? 

2. When making adjustments to a subject home do you consider things like a fire place, a fence, solar panels, 2 car vs 1 car garage, and/or covered patio?

3. If you do consider those adjustments what's a good percentage on those items to add or subtract from the subject property's ARV?

I am new to this world, and am just learning on the fly. There's so much information out there, its exciting and also terrifying at the same time. Any bit of guidance is immeasurably appreciated. Thanks for reading up to this point.