You asked about doing things to the bike. All well and good, but if you are a new rider, you should be as much concerned with your ability, and attitude on riding a bike. The bike can be "farkled perfectly" but it's no good if you are not prepared to ride safely. Don't forget the protective clothing. Jacket, helmet, etc.
All/most of above... Plus:
Bars do save plastic.
I'd suggest building a good tool kit. My 2011 came with a kit, only 20% of its contents fit anything on the bike. It will get you familiar with all the fittings on the bike, and allow you to check everything to make sure it's properly tightened. ( Some dealers are not so good at "Pre-Sale-Checkups" )
These "cheap tool stores" would be fine for the amount you will use the tools.
Use the bikes tool kit while doing normal maintenance to get familiar and see what works, and what does not work, before you have to do something on the road.
Ride it around in parking lots, back un-traveled roads a lot to get used to how it handles. Practice emergency braking, and maneuvers a lot. Read every thing you can on how to ride safely. ( "Motorcycle Consumer News" has articles on this each month in their magazine, as well as other bike magazines. )
To be as safe as you can.. "Be a little paranoid" all the time. Expect that guy to pull a boner, that gal to not see you and pull out in front, etc. Be ready to brake, "properly", all the time.
It may sound like I'm preaching, but I've been riding since I was 40. I'm 75 now, with both on and off road experience. I just had my first traffic related "put-down".
See it here.. http://youtu.be/e7TXgaPZnn8
2017 Yamaha XT250
1990 Honda NX250 (Green/White)
2011 Kawasaki KLR 650 (Orange & White )
My KLR Page..http://www.powers31.info/2011_KLR650.htm
Mod's to KLR:
Power socket, L.E.D. Battery Indicator, Camera bag holder
Custom Saddlebag frames .
Louder horns, Firstgear Onyx tail bag.
Custom Aluminum Skid Plate.
Cut down seat with Custom pad.
Go Pro Camera mount.