Ashley, I I'm new in this also, at least I have not done a deal but have been direct mailing for over a year, just not a lot so far, so for what it's worth :
1) I take my calls straight to my phone but using a Google number with its own ring tone so I keep business calls separated.
2) you can sell it to me. As far as legality I'll have to defer to others who know better but seems like people do it everywhere and here also but they officially it's as they say a "grey area" so just keep honest about what you're doing and don't piss anyone off I guess.
3) I just use a spreadsheet. Mind you I think I have the mind and patience for it, but with work it has worked for me. Better if you can and like to meddle with spreadsheets, otherwise shop around for some software. Without anything to compare tho I like to think mine kicks butt you're free to use if you want.
If you have other questions for another local newbie I can offer whatever I got and am always open to making local connections as as I mentioned I'm looking to buy other's deals and sell my own too. Good luck.